diff --git a/CRM/Contact/Form/Merge.php b/CRM/Contact/Form/Merge.php
index 0f68d5a057c2..fb6f6bddf12c 100644
--- a/CRM/Contact/Form/Merge.php
+++ b/CRM/Contact/Form/Merge.php
@@ -229,8 +229,8 @@ public function preProcess() {
       }
 
       // add related table elements
-      foreach ($rowsElementsAndInfo['rel_table_elements'] as $relTableElement) {
-        $element = $this->addElement($relTableElement[0], $relTableElement[1]);
+      foreach (array_keys($rowsElementsAndInfo['rel_tables']) as $relTableElement) {
+        $element = $this->addElement('checkbox', $relTableElement);
         $element->setChecked(TRUE);
       }
 
diff --git a/CRM/Dedupe/Merger.php b/CRM/Dedupe/Merger.php
index 1a918695103c..0bab319abba7 100644
--- a/CRM/Dedupe/Merger.php
+++ b/CRM/Dedupe/Merger.php
@@ -1097,9 +1097,6 @@ public static function getLocationBlockInfo() {
    *
    *   elements => An array of form elements for the merge UI
    *
-   *   rel_table_elements => An array of form elements for the merge UI for
-   *     entities related to the contact (eg: checkbox to move 'mailings')
-   *
    *   rel_tables => Stores the tables that have related entities for the contact
    *     for example mailings, groups
    *
@@ -1129,7 +1126,7 @@ public static function getRowsElementsAndInfo($mainId, $otherId, $checkPermissio
 
     $compareFields = self::retrieveFields($main, $other);
 
-    $rows = $elements = $relTableElements = $migrationInfo = [];
+    $rows = $elements = $migrationInfo = [];
 
     foreach ($compareFields['contact'] as $field) {
       if ($field === 'contact_sub_type') {
@@ -1186,7 +1183,6 @@ public static function getRowsElementsAndInfo($mainId, $otherId, $checkPermissio
     $mergeHandler = new CRM_Dedupe_MergeHandler((int) $mainId, (int) $otherId);
     $relTables = $mergeHandler->getTablesRelatedToTheMergePair();
     foreach ($relTables as $name => $null) {
-      $relTableElements[] = ['checkbox', "move_$name"];
       $migrationInfo["move_$name"] = 1;
 
       $relTables[$name]['main_url'] = str_replace('$cid', $mainId, $relTables[$name]['url']);
@@ -1274,7 +1270,6 @@ public static function getRowsElementsAndInfo($mainId, $otherId, $checkPermissio
     $result = [
       'rows' => $rows,
       'elements' => $elements,
-      'rel_table_elements' => $relTableElements,
       'rel_tables' => $relTables,
       'main_details' => $main,
       'other_details' => $other,