diff --git a/modules/backend/formwidgets/DataTable.php b/modules/backend/formwidgets/DataTable.php
index 1adf51e20..c9e37a955 100644
--- a/modules/backend/formwidgets/DataTable.php
+++ b/modules/backend/formwidgets/DataTable.php
@@ -138,6 +138,8 @@ class DataTable extends FormWidgetBase
         // all records at once. -ab
 
         $records = $this->getLoadValue() ?: [];
+
+        $dataSource->purge();
         $dataSource->initRecords((array) $records);
     }