diff --git a/application/Espo/Core/Action/Actions/Merge/Merger.php b/application/Espo/Core/Action/Actions/Merge/Merger.php
index 605fca61ac..9b50d074d2 100644
--- a/application/Espo/Core/Action/Actions/Merge/Merger.php
+++ b/application/Espo/Core/Action/Actions/Merge/Merger.php
@@ -269,6 +269,10 @@ class Merger
 
         $columnAttributeMap = $this->getLinkColumnAttributeMap($entityType, $link);
 
+        if ($link === 'meetings') {
+            echo $sourceEntity->getId() ;
+        }
+
         $collection = $this->entityManager
             ->getRelation($sourceEntity, $link)
             ->find();
diff --git a/application/Espo/Modules/Crm/Resources/i18n/en_US/Global.json b/application/Espo/Modules/Crm/Resources/i18n/en_US/Global.json
index 5522f79f6c..2588f73282 100644
--- a/application/Espo/Modules/Crm/Resources/i18n/en_US/Global.json
+++ b/application/Espo/Modules/Crm/Resources/i18n/en_US/Global.json
@@ -112,7 +112,9 @@
         "account": "Account",
         "opportunity": "Opportunity",
         "contact": "Contact",
-        "parent": "Parent"
+        "parent": "Parent",
+        "meetingsChildren": "Meetings Children",
+        "callsChildren": "Calls Children"
     },
     "options": {
         "reminderTypes": {
diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Contact.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Contact.json
index c58edbf66d..11edbd5980 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Contact.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Contact.json
@@ -648,6 +648,20 @@
                 "status": "acceptanceStatus"
             }
         },
+        "meetingsChildren": {
+            "type": "hasChildren",
+            "entity": "Meeting",
+            "foreign": "parent",
+            "readOnly": true,
+            "customizationDisabled": true
+        },
+        "callsChildren": {
+            "type": "hasChildren",
+            "entity": "Call",
+            "foreign": "parent",
+            "readOnly": true,
+            "customizationDisabled": true
+        },
         "tasks": {
             "type": "hasChildren",
             "entity": "Task",
diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Lead.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Lead.json
index 43e73b7482..e728f0dd68 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Lead.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Lead.json
@@ -310,6 +310,20 @@
                 "status": "acceptanceStatus"
             }
         },
+        "meetingsChildren": {
+            "type": "hasChildren",
+            "entity": "Meeting",
+            "foreign": "parent",
+            "readOnly": true,
+            "customizationDisabled": true
+        },
+        "callsChildren": {
+            "type": "hasChildren",
+            "entity": "Call",
+            "foreign": "parent",
+            "readOnly": true,
+            "customizationDisabled": true
+        },
         "tasks": {
             "type": "hasChildren",
             "entity": "Task",
diff --git a/tests/integration/Espo/Tools/Merge/MergeTest.php b/tests/integration/Espo/Tools/Merge/MergeTest.php
new file mode 100644
index 0000000000..ba98e7a84d
--- /dev/null
+++ b/tests/integration/Espo/Tools/Merge/MergeTest.php
@@ -0,0 +1,79 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * 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\integration\Espo\Tools\Merge;
+
+use Espo\Core\Action\Actions\Merge\Merger;
+use Espo\Core\Action\Params;
+use Espo\Core\Field\DateTimeOptional;
+use Espo\Modules\Crm\Entities\Lead;
+use Espo\Modules\Crm\Entities\Meeting;
+use tests\integration\Core\BaseTestCase;
+
+class MergeTest extends BaseTestCase
+{
+    /**
+     * @noinspection PhpUnhandledExceptionInspection
+     */
+    public function testMerge(): void
+    {
+        $em = $this->getEntityManager();
+
+        $lead1 = $em->getRepositoryByClass(Lead::class)->getNew();
+        $lead1->setLastName('L 1');
+        $em->saveEntity($lead1);
+
+        $lead2 = $em->getRepositoryByClass(Lead::class)->getNew();
+        $lead2->setLastName('L 2');
+        $em->saveEntity($lead2);
+
+        $meeting = $em->getRepositoryByClass(Meeting::class)->getNew();
+        $meeting->setParent($lead2);
+        $meeting->setName('M');
+        $meeting->setDateStart(DateTimeOptional::createNow());
+        $em->saveEntity($meeting);
+
+        $merger = $this->getInjectableFactory()->create(Merger::class);
+
+        $merger->process(
+            params: new Params(Lead::ENTITY_TYPE, $lead1->getId()),
+            sourceIdList: [$lead2->getId()],
+            data: (object) [],
+        );
+
+        $em->refreshEntity($meeting);
+
+        $this->assertEquals($lead1->getId(), $meeting->getParent()?->getId());
+        $this->assertEquals(Lead::ENTITY_TYPE, $meeting->getParent()?->getEntityType());
+
+        $this->assertNull(
+            $em->getEntityById(Lead::ENTITY_TYPE, $lead2->getId())
+        );
+    }
+}