diff --git a/CRM/Dedupe/Merger.php b/CRM/Dedupe/Merger.php
index f6a2e4749ea3..ce273dd125ce 100644
--- a/CRM/Dedupe/Merger.php
+++ b/CRM/Dedupe/Merger.php
@@ -1389,6 +1389,7 @@ public static function getRowsElementsAndInfo($mainId, $otherId, $checkPermissio
             NULL,
             NULL,
             $value,
+            'is_checked' => (!isset($rows["move_custom_$fid"]['main']) || $rows["move_custom_$fid"]['main'] === ''),
           ];
           $migrationInfo["move_custom_$fid"] = $value;
         }