diff --git a/application/Espo/Core/Console/Commands/Migrate.php b/application/Espo/Core/Console/Commands/Migrate.php
new file mode 100644
index 0000000000..cf7e20541b
--- /dev/null
+++ b/application/Espo/Core/Console/Commands/Migrate.php
@@ -0,0 +1,50 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Console\Commands;
+
+use Espo\Core\Console\Command;
+use Espo\Core\Console\Command\Params;
+use Espo\Core\Console\IO;
+use Espo\Core\Upgrades\Migration\Runner;
+
+/**
+ * @noinspection PhpUnused
+ */
+class Migrate implements Command
+{
+    public function __construct(
+        private Runner $runner
+    ) {}
+
+    public function run(Params $params, IO $io): void
+    {
+        $this->runner->run($io);
+    }
+}
diff --git a/application/Espo/Core/Console/Commands/MigrationVersionStep.php b/application/Espo/Core/Console/Commands/MigrationVersionStep.php
new file mode 100644
index 0000000000..860ed3805e
--- /dev/null
+++ b/application/Espo/Core/Console/Commands/MigrationVersionStep.php
@@ -0,0 +1,81 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Console\Commands;
+
+use Espo\Core\Console\Command;
+use Espo\Core\Console\Command\Params;
+use Espo\Core\Console\IO;
+use Espo\Core\DataManager;
+use Espo\Core\Exceptions\Error;
+use Espo\Core\InjectableFactory;
+use Espo\Core\Upgrades\Migration;
+use RuntimeException;
+
+/**
+ * @noinspection PhpUnused
+ */
+class MigrationVersionStep implements Command
+{
+    public function __construct(
+        private InjectableFactory $injectableFactory,
+        private DataManager $dataManager
+    ) {}
+
+    public function run(Params $params, IO $io): void
+    {
+        $step = $params->getOption('step');
+
+        if (!$step) {
+            throw new RuntimeException("No step parameter.");
+        }
+
+        $dir = 'V' . str_replace('.', '_', $step);
+
+        /** @var class-string<Migration\Script> $className */
+        $className = "Espo\\Core\\Upgrades\\Migrations\\$dir\\AfterUpgrade";
+
+        if (!class_exists($className)) {
+            $io->writeLine("No after-upgrade script.");
+        }
+
+        /** @var Migration\Script $script */
+        $script = $this->injectableFactory->create($className);
+        $script->run();
+
+        try {
+            $this->dataManager->rebuild();
+        }
+        catch (Error $e) {
+            throw new RuntimeException("Error while rebuild: " . $e->getMessage());
+        }
+
+        $io->writeLine("Done.");
+    }
+}
diff --git a/application/Espo/Core/Upgrades/Migration/Runner.php b/application/Espo/Core/Upgrades/Migration/Runner.php
new file mode 100644
index 0000000000..7e703530b3
--- /dev/null
+++ b/application/Espo/Core/Upgrades/Migration/Runner.php
@@ -0,0 +1,121 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Upgrades\Migration;
+
+use Espo\Core\Console\IO;
+use Espo\Core\Utils\Config;
+use Espo\Core\Utils\File\Manager;
+use RuntimeException;
+use Symfony\Component\Process\PhpExecutableFinder;
+use Symfony\Component\Process\Process;
+
+class Runner
+{
+    private string $defaultConfigPath = 'application/Espo/Resources/defaults/config.php';
+
+    public function __construct(
+        private Config $config,
+        private Manager $fileManager,
+        private StepsExtractor $stepsExtractor,
+        private StepsProvider $stepsProvider
+    ) {}
+
+    public function run(IO $io): void
+    {
+        $version = $this->config->get('version');
+        $targetVersion = $this->getTargetVersion();
+
+        $fullList = $this->stepsProvider->get();
+        $steps = $this->stepsExtractor->extract($version, $targetVersion, $fullList);
+
+        if ($steps === []) {
+            $io->writeLine(" No migrations to run.");
+
+            return;
+        }
+
+        $io->write(" Running migrations...");
+
+        foreach ($steps as $step) {
+            $this->runVersionStep($io, $step);
+        }
+    }
+
+    private function runVersionStep(IO $io, string $step): void
+    {
+        $phpExecutablePath = $this->getPhpExecutablePath();
+
+        $command = "command.php migration-version-step --step=$step";
+
+        $io->write("    $step...");
+
+        $process = new Process([$phpExecutablePath, $command]);
+        $process->setTimeout(null);
+        $process->run();
+
+        if ($process->isSuccessful()) {
+            $io->writeLine(" DONE");
+
+            return;
+        }
+
+        $io->writeLine(" FAIL");
+
+        throw new RuntimeException();
+    }
+
+    private function getPhpExecutablePath(): string
+    {
+        $phpExecutablePath = $this->config->get('phpExecutablePath');
+
+        if (!$phpExecutablePath) {
+            $phpExecutablePath = (new PhpExecutableFinder)->find();
+        }
+
+        return $phpExecutablePath;
+    }
+
+    private function getTargetVersion(): string
+    {
+        $data = $this->fileManager->getPhpContents($this->defaultConfigPath);
+
+        if (!is_array($data)) {
+            throw new RuntimeException("No default config.");
+        }
+
+        $version = $data['version'] ?? null;
+
+        if (!$version || !is_string($version)) {
+            throw new RuntimeException("No or bad 'version' parameter in default config.");
+        }
+
+        return $version;
+    }
+}
diff --git a/application/Espo/Core/Upgrades/Migration/Script.php b/application/Espo/Core/Upgrades/Migration/Script.php
new file mode 100644
index 0000000000..77121f7554
--- /dev/null
+++ b/application/Espo/Core/Upgrades/Migration/Script.php
@@ -0,0 +1,35 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Upgrades\Migration;
+
+interface Script
+{
+    public function run(): void;
+}
diff --git a/application/Espo/Core/Upgrades/Migration/StepsExtractor.php b/application/Espo/Core/Upgrades/Migration/StepsExtractor.php
new file mode 100644
index 0000000000..94a3737f6c
--- /dev/null
+++ b/application/Espo/Core/Upgrades/Migration/StepsExtractor.php
@@ -0,0 +1,93 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Upgrades\Migration;
+
+use RuntimeException;
+use const SORT_STRING;
+
+class StepsExtractor
+{
+    /**
+     * @param string[] $fullList
+     * @return string[]
+     */
+    public function extract(string $from, string $to, array $fullList): array
+    {
+        sort($fullList, SORT_STRING);
+
+        $aFrom = self::split($from);
+        $aTo = self::split($to);
+
+        $isHotfix = $aFrom[0] === $aTo[0] && $aFrom[1] === $aTo[1];
+
+        $list = [];
+
+        foreach ($fullList as $item) {
+            $a = self::split($item);
+
+            $v1 = $a[0] . '.' . $a[1] . '.' . ($a[2] ?? '0');
+
+            if (version_compare($v1, $from) <= 0) {
+                continue;
+            }
+
+            if (version_compare($v1, $to) > 0) {
+                continue;
+            }
+
+            if (!$isHotfix && $a[2] !== null) {
+                continue;
+            }
+
+            $list[] = $item;
+        }
+
+        return $list;
+    }
+
+    /**
+     * @return array{string, string, ?string}
+     */
+    private static function split(string $version): array
+    {
+        $array = explode('.', $version, 3);
+
+        if (count($array) === 2) {
+            return [$array[0], $array[1], null];
+        }
+
+        if (count($array) !== 3) {
+            throw new RuntimeException("Bad version number $version.");
+        }
+
+        /** @var array{string, string, string} */
+        return $array;
+    }
+}
diff --git a/application/Espo/Core/Upgrades/Migration/StepsProvider.php b/application/Espo/Core/Upgrades/Migration/StepsProvider.php
new file mode 100644
index 0000000000..91dc9054ac
--- /dev/null
+++ b/application/Espo/Core/Upgrades/Migration/StepsProvider.php
@@ -0,0 +1,63 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Upgrades\Migration;
+
+use Espo\Core\Utils\File\Manager;
+use const SORT_STRING;
+
+class StepsProvider
+{
+    private string $dir = 'application/Espo/Core/Upgrades/Migrations';
+
+    public function __construct(
+        private Manager $fileManager
+    ) {}
+
+    /**
+     * @return string[]
+     */
+    public function get(): array
+    {
+        $list = $this->fileManager->getDirList($this->dir);
+
+        $list = array_filter($list, function ($item) {
+            $dir = $this->dir . '/' . $item;
+
+            return $this->fileManager->isFile($dir . '/AfterUpgrade.php');
+        });
+
+        $list = array_values($list);
+        $list = array_map(fn ($item) => substr(str_replace('_', '.', $item), 1), $list);
+
+        sort($list, SORT_STRING);
+
+        return $list;
+    }
+}
diff --git a/application/Espo/Core/Upgrades/Migrations/V8_0/AfterUpgrade.php b/application/Espo/Core/Upgrades/Migrations/V8_0/AfterUpgrade.php
new file mode 100644
index 0000000000..9693951be9
--- /dev/null
+++ b/application/Espo/Core/Upgrades/Migrations/V8_0/AfterUpgrade.php
@@ -0,0 +1,119 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Upgrades\Migrations\V8_0;
+
+use Espo\Core\Container;
+use Espo\Core\Upgrades\Migration\Script;
+use Espo\Core\Utils\Metadata;
+use Espo\Entities\Role;
+use Espo\ORM\EntityManager;
+use Espo\ORM\Query\Part\Expression;
+use Espo\ORM\Query\UpdateBuilder;
+
+class AfterUpgrade implements Script
+{
+    public function __construct(
+        private Container $container
+    ) {}
+
+    public function run(): void
+    {
+        $this->updateRoles(
+            $this->container->getByClass(EntityManager::class)
+        );
+
+        $this->updateMetadata(
+            $this->container->getByClass(Metadata::class)
+        );
+    }
+
+    private function updateRoles(EntityManager $entityManager): void
+    {
+        $query = UpdateBuilder::create()
+            ->in(Role::ENTITY_TYPE)
+            ->set(['messagePermission' => Expression::column('assignmentPermission')])
+            ->build();
+
+        $entityManager->getQueryExecutor()->execute($query);
+    }
+
+    private function updateMetadata(Metadata $metadata): void
+    {
+        $defs = $metadata->get(['scopes']);
+
+        foreach ($defs as $entityType => $item) {
+            $isCustom = $item['isCustom'] ?? false;
+            $type = $item['type'] ?? false;
+
+            if (!$isCustom) {
+                continue;
+            }
+
+            if ($type === 'Event') {
+                $metadata->set('entityDefs', $entityType, [
+                    'fields' => [
+                        'dateEnd' => [
+                            'suppressValidationList' => ['required'],
+                        ],
+                    ]
+                ]);
+
+                $metadata->save();
+
+                continue;
+            }
+
+            if (
+                !in_array($type, [
+                    'BasePlus',
+                    'Base',
+                    'Company',
+                    'Person',
+                ])
+            ) {
+                continue;
+            }
+
+            $recordDefs = $metadata->getCustom('recordDefs', $entityType) ?? (object) [];
+            $scopes = $metadata->getCustom('scopes', $entityType) ?? (object) [];
+
+            $recordDefs->duplicateWhereBuilderClassName = "Espo\\Classes\\DuplicateWhereBuilders\\General";
+
+            $scopes->duplicateCheckFieldList = [];
+
+            if ($type === 'Company' || $type === 'Person') {
+                $scopes->duplicateCheckFieldList = ['name', 'emailAddress'];
+            }
+
+            $metadata->saveCustom('recordDefs', $entityType, $recordDefs);
+            $metadata->saveCustom('scopes', $entityType, $scopes);
+        }
+    }
+}
diff --git a/application/Espo/Core/Upgrades/Migrations/V8_1/AfterUpgrade.php b/application/Espo/Core/Upgrades/Migrations/V8_1/AfterUpgrade.php
new file mode 100644
index 0000000000..02e75d8c60
--- /dev/null
+++ b/application/Espo/Core/Upgrades/Migrations/V8_1/AfterUpgrade.php
@@ -0,0 +1,61 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Upgrades\Migrations\V8_1;
+
+use Espo\Core\Container;
+use Espo\Core\Upgrades\Migration\Script;
+use Espo\Core\InjectableFactory;
+use Espo\Core\Utils\Config;
+
+class AfterUpgrade implements Script
+{
+    public function __construct(
+        private Container $container
+    ) {}
+
+    public function run(): void
+    {
+        $config = $this->container->getByClass(Config::class);
+
+        $configWriter = $this->container->getByClass(InjectableFactory::class)
+            ->create(Config\ConfigWriter::class);
+
+        $configWriter->setMultiple([
+            'phoneNumberNumericSearch' => false,
+            'phoneNumberInternational' => false,
+        ]);
+
+        if ($config->get('pdfEngine') === 'Tcpdf') {
+            $configWriter->set('pdfEngine', 'Dompdf');
+        }
+
+        $configWriter->save();
+    }
+}
diff --git a/application/Espo/Core/Upgrades/Migrations/V8_2/AfterUpgrade.php b/application/Espo/Core/Upgrades/Migrations/V8_2/AfterUpgrade.php
new file mode 100644
index 0000000000..79579aa8fc
--- /dev/null
+++ b/application/Espo/Core/Upgrades/Migrations/V8_2/AfterUpgrade.php
@@ -0,0 +1,125 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Upgrades\Migrations\V8_2;
+
+use Espo\Core\Upgrades\Migration\Script;
+use Espo\Core\InjectableFactory;
+use Espo\Core\Utils\Config;
+use Espo\Core\Utils\Metadata;
+use Espo\Entities\Template;
+use Espo\ORM\EntityManager;
+use Espo\Tools\Pdf\Template as PdfTemplate;
+
+class AfterUpgrade implements Script
+{
+    public function __construct(
+        private InjectableFactory $injectableFactory,
+        private Config $config,
+        private EntityManager $entityManager,
+        private Metadata $metadata
+    ) {}
+
+    public function run(): void
+    {
+        $configWriter = $this->injectableFactory->create(Config\ConfigWriter::class);
+
+        $configWriter->setMultiple([
+            'jobForceUtc' => true,
+        ]);
+
+        $configWriter->save();
+
+        $em = $this->entityManager;
+        $config = $this->config;
+
+        $this->updateTemplates($em, $config);
+        $this->updateTargetList($this->metadata);
+    }
+
+    private function updateTemplates(EntityManager $entityManager, Config $config): void
+    {
+        if ($config->get('pdfEngine') !== 'Dompdf') {
+            return;
+        }
+
+        /** @var iterable<Template> $templates */
+        $templates = $entityManager->getRDBRepositoryByClass(Template::class)
+            ->sth()
+            ->where(['pageFormat' => PdfTemplate::PAGE_FORMAT_CUSTOM])
+            ->find();
+
+        foreach ($templates as $template) {
+            $width = $template->get('pageWidth') ?? 0.0;
+            $height = $template->get('pageHeight') ?? 0.0;
+
+            $template->setMultiple([
+                'pageWidth' => $width / 2.83465,
+                'pageHeight' => $height / 2.83465,
+            ]);
+
+            $entityManager->saveEntity($template);
+        }
+    }
+
+    private function updateTargetList(Metadata $metadata): void
+    {
+        $links = $metadata->get('entityDefs.TargetList.links') ?? [];
+
+        $toSave = false;
+
+        foreach ($links as $link => $defs) {
+            if (empty($defs['isCustom'])) {
+                continue;
+            }
+
+            if (!$metadata->get("clientDefs.TargetList.relationshipPanels.$link.massSelect")) {
+                continue;
+            }
+
+            $metadata->set('recordDefs', 'TargetList', [
+                'relationships' => [
+                    $link => [
+                        'massLink' => true,
+                        'linkRequiredForeignAccess' => 'read',
+                        'mandatoryAttributeList' => ['targetListIsOptedOut'],
+                    ]
+                ]
+            ]);
+
+            $toSave = true;
+        }
+
+        if (!$toSave) {
+            return;
+        }
+
+        $metadata->save();
+    }
+}
diff --git a/application/Espo/Core/Upgrades/Migrations/V8_2_2/AfterUpgrade.php b/application/Espo/Core/Upgrades/Migrations/V8_2_2/AfterUpgrade.php
new file mode 100644
index 0000000000..8f4e775906
--- /dev/null
+++ b/application/Espo/Core/Upgrades/Migrations/V8_2_2/AfterUpgrade.php
@@ -0,0 +1,45 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Upgrades\Migrations\V8_2_2;
+
+use Espo\Core\Upgrades\Migration\Script;
+use Espo\Core\Utils\Log;
+
+class AfterUpgrade implements Script
+{
+    public function __construct(
+        private Log $log
+    ) {}
+
+    public function run(): void
+    {
+        $this->log->warning('Upgrade script test...');
+    }
+}
diff --git a/tests/unit/Espo/Core/Upgrades/Migration/StepsExtractorTest.php b/tests/unit/Espo/Core/Upgrades/Migration/StepsExtractorTest.php
new file mode 100644
index 0000000000..45c3399f9b
--- /dev/null
+++ b/tests/unit/Espo/Core/Upgrades/Migration/StepsExtractorTest.php
@@ -0,0 +1,205 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace tests\unit\Espo\Core\Upgrades\Migration;
+
+use Espo\Core\Upgrades\Migration\StepsExtractor;
+use PHPUnit\Framework\TestCase;
+
+class StepsExtractorTest extends TestCase
+{
+    public function testGet1(): void
+    {
+        $extractor = new StepsExtractor();
+
+        $list = $extractor->extract('8.0.0', '8.3.0', [
+            '7.0',
+            '7.5',
+            '8.0',
+            '8.1',
+            '8.1.4',
+            '8.3',
+            '8.3.1',
+        ]);
+
+        $this->assertEquals([
+            '8.1',
+            '8.3',
+        ], $list);
+    }
+
+    public function testGet2(): void
+    {
+        $extractor = new StepsExtractor();
+
+        $list = $extractor->extract('8.0.0', '8.3.1', [
+            '7.0',
+            '7.5',
+            '8.0',
+            '8.1',
+            '8.1.4',
+            '8.3',
+            '8.3.1',
+        ]);
+
+        $this->assertEquals([
+            '8.1',
+            '8.3',
+        ], $list);
+    }
+
+    public function testGet3(): void
+    {
+        $extractor = new StepsExtractor();
+
+        $list = $extractor->extract('8.0.0', '8.3.5', [
+            '7.0',
+            '7.5',
+            '8.0',
+            '8.1',
+            '8.1.4',
+            '8.3',
+            '8.3.2',
+        ]);
+
+        $this->assertEquals([
+            '8.1',
+            '8.3',
+        ], $list);
+    }
+
+    public function testGet4(): void
+    {
+        $extractor = new StepsExtractor();
+
+        $list = $extractor->extract('8.2.0', '8.3.5', [
+            '7.0',
+            '7.5',
+            '8.0',
+            '8.1',
+            '8.1.4',
+            '8.3',
+            '8.3.2',
+        ]);
+
+        $this->assertEquals([
+            '8.3',
+        ], $list);
+    }
+
+    public function testGet5(): void
+    {
+        $extractor = new StepsExtractor();
+
+        $list = $extractor->extract('8.0.4', '8.3.5', [
+            '7.0',
+            '7.5',
+            '8.0',
+            '8.1',
+            '8.1.4',
+            '8.3',
+            '8.3.2',
+        ]);
+
+        $this->assertEquals([
+            '8.1',
+            '8.3',
+        ], $list);
+    }
+
+    public function testGetMajor1(): void
+    {
+        $extractor = new StepsExtractor();
+
+        $list = $extractor->extract('7.5.4', '8.3.5', array_reverse([
+            '7.0',
+            '7.5',
+            '7.5.1',
+            '7.6',
+            '7.6.1',
+            '8.0',
+            '8.1',
+            '8.1.4',
+            '8.3',
+            '8.3.2',
+        ]));
+
+        $this->assertEquals([
+            '7.6',
+            '8.0',
+            '8.1',
+            '8.3',
+        ], $list);
+    }
+
+    public function testGetPatch1(): void
+    {
+        $extractor = new StepsExtractor();
+
+        $list = $extractor->extract('8.3.0', '8.3.5', [
+            '7.0',
+            '7.5',
+            '8.0',
+            '8.1',
+            '8.1.4',
+            '8.3',
+            '8.3.2',
+            '8.3.4',
+        ]);
+
+        $this->assertEquals([
+            '8.3.2',
+            '8.3.4',
+        ], $list);
+    }
+
+    public function testGetPatch2(): void
+    {
+        $extractor = new StepsExtractor();
+
+        $list = $extractor->extract('8.3.0', '8.3.5', [
+            '7.0',
+            '7.5',
+            '8.0',
+            '8.1',
+            '8.1.4',
+            '8.3',
+            '8.3.2',
+            '8.3.4',
+            '8.3.5',
+            '8.6.1',
+        ]);
+
+        $this->assertEquals([
+            '8.3.2',
+            '8.3.4',
+            '8.3.5',
+        ], $list);
+    }
+}
diff --git a/tests/unit/Espo/Core/Upgrades/Migration/StepsProviderTest.php b/tests/unit/Espo/Core/Upgrades/Migration/StepsProviderTest.php
new file mode 100644
index 0000000000..30680f06e3
--- /dev/null
+++ b/tests/unit/Espo/Core/Upgrades/Migration/StepsProviderTest.php
@@ -0,0 +1,61 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2024 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Upgrades\Migration;
+
+use Espo\Core\Utils\File\Manager;
+use PHPUnit\Framework\TestCase;
+
+class StepsProviderTest extends TestCase
+{
+    public function testGet1(): void
+    {
+        $fileManager = $this->createMock(Manager::class);
+
+        $fileManager
+            ->expects($this->once())
+            ->method('getDirList')
+            ->willReturn(['V7_5_1', 'V8_0', 'V8_1', 'V8_2', 'V8_2_2']);
+
+        $fileManager
+            ->expects($this->any())
+            ->method('isFile')
+            ->willReturn(true);
+
+        $provider = new StepsProvider($fileManager);
+
+        $this->assertEquals([
+            '7.5.1',
+            '8.0',
+            '8.1',
+            '8.2',
+            '8.2.2',
+        ], $provider->get());
+    }
+}