diff --git a/application/Espo/Modules/Crm/Resources/i18n/en_US/Account.json b/application/Espo/Modules/Crm/Resources/i18n/en_US/Account.json
index af5d486331..c6be76bb79 100644
--- a/application/Espo/Modules/Crm/Resources/i18n/en_US/Account.json
+++ b/application/Espo/Modules/Crm/Resources/i18n/en_US/Account.json
@@ -13,7 +13,8 @@
         "contactRole": "Title",
         "campaign": "Campaign",
         "targetLists": "Target Lists",
-        "targetList": "Target List"
+        "targetList": "Target List",
+        "originalLead": "Original Lead"
     },
     "links": {
         "contacts": "Contacts",
@@ -27,7 +28,8 @@
         "targetLists": "Target Lists",
         "campaignLogRecords": "Campaign Log",
         "campaign": "Campaign",
-        "portalUsers": "Portal Users"
+        "portalUsers": "Portal Users",
+        "originalLead": "Original Lead"
     },
     "options": {
         "type": {
diff --git a/application/Espo/Modules/Crm/Resources/i18n/en_US/Contact.json b/application/Espo/Modules/Crm/Resources/i18n/en_US/Contact.json
index 4063bee0bb..be519032a6 100644
--- a/application/Espo/Modules/Crm/Resources/i18n/en_US/Contact.json
+++ b/application/Espo/Modules/Crm/Resources/i18n/en_US/Contact.json
@@ -15,7 +15,8 @@
         "campaign": "Campaign",
         "targetLists": "Target Lists",
         "targetList": "Target List",
-        "portalUser": "Portal User"
+        "portalUser": "Portal User",
+        "originalLead": "Original Lead"
     },
     "links": {
         "opportunities": "Opportunities",
@@ -26,7 +27,8 @@
         "account": "Account (Primary)",
         "accounts": "Accounts",
         "casesPrimary": "Cases (Primary)",
-        "portalUser": "Portal User"
+        "portalUser": "Portal User",
+        "originalLead": "Original Lead"
     },
     "labels": {
         "Create Contact": "Create Contact"
diff --git a/application/Espo/Modules/Crm/Resources/i18n/en_US/Opportunity.json b/application/Espo/Modules/Crm/Resources/i18n/en_US/Opportunity.json
index 427b86cdf1..abfdb40fae 100644
--- a/application/Espo/Modules/Crm/Resources/i18n/en_US/Opportunity.json
+++ b/application/Espo/Modules/Crm/Resources/i18n/en_US/Opportunity.json
@@ -12,12 +12,14 @@
         "description": "Description",
         "amountConverted": "Amount (converted)",
         "amountWeightedConverted": "Amount Weighted",
-        "campaign": "Campaign"
+        "campaign": "Campaign",
+        "originalLead": "Original Lead"
     },
     "links": {
         "contacts": "Contacts",
         "documents": "Documents",
-        "campaign": "Campaign"
+        "campaign": "Campaign",
+        "originalLead": "Original Lead"
     },
     "options": {
         "stage": {
diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Account.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Account.json
index 60e9353cef..c039678264 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Account.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Account.json
@@ -159,6 +159,12 @@
             "layoutMassUpdateDisabled": true,
             "layoutFiltersDisabled": true,
             "entity": "TargetList"
+        },
+        "originalLead": {
+            "type": "link",
+            "layoutMassUpdateDisabled": true,
+            "layoutListDisabled": true,
+            "readOnly": true
         }
     },
     "links": {
@@ -268,6 +274,11 @@
             "type": "hasMany",
             "entity": "User",
             "foreign": "accounts"
+        },
+        "originalLead": {
+            "type": "hasOne",
+            "entity": "Lead",
+            "foreign": "createdAccount"
         }
     },
     "collection": {
diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Contact.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Contact.json
index 00569f00d9..27c800e25f 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Contact.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Contact.json
@@ -183,6 +183,12 @@
             "layoutMassUpdateDisabled": true,
             "layoutListDisabled": true,
             "readOnly": true
+        },
+        "originalLead": {
+            "type": "link",
+            "layoutMassUpdateDisabled": true,
+            "layoutListDisabled": true,
+            "readOnly": true
         }
     },
     "links": {
@@ -280,6 +286,11 @@
             "type": "hasOne",
             "entity": "User",
             "foreign": "contact"
+        },
+        "originalLead": {
+            "type": "hasOne",
+            "entity": "Lead",
+            "foreign": "createdContact"
         }
     },
     "collection": {
diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Lead.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Lead.json
index 41edea778b..20b5ebf5b8 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Lead.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Lead.json
@@ -208,17 +208,20 @@
         "createdAccount": {
             "type": "belongsTo",
             "entity": "Account",
-            "noJoin": true
+            "noJoin": true,
+            "foreign": "originalLead"
         },
         "createdContact": {
             "type": "belongsTo",
             "entity": "Contact",
-            "noJoin": true
+            "noJoin": true,
+            "foreign": "originalLead"
         },
         "createdOpportunity": {
             "type": "belongsTo",
             "entity": "Opportunity",
-            "noJoin": true
+            "noJoin": true,
+            "foreign": "originalLead"
         },
         "campaign": {
             "type": "belongsTo",
diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Opportunity.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Opportunity.json
index 015bcc33ff..5c9ff101bf 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Opportunity.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Opportunity.json
@@ -70,6 +70,12 @@
         "campaign": {
             "type": "link"
         },
+        "originalLead": {
+            "type": "link",
+            "layoutMassUpdateDisabled": true,
+            "layoutListDisabled": true,
+            "readOnly": true
+        },
         "createdAt": {
             "type": "datetime",
             "readOnly": true
@@ -167,6 +173,11 @@
             "entity": "Campaign",
             "foreign": "opportunities",
             "noJoin": true
+        },
+        "originalLead": {
+            "type": "hasOne",
+            "entity": "Lead",
+            "foreign": "createdOpportunity"
         }
     },
     "collection": {