Index: wp-admin/includes/nav-menu.php
===================================================================
--- wp-admin/includes/nav-menu.php	(revision 17979)
+++ wp-admin/includes/nav-menu.php	(working copy)
@@ -8,6 +8,9 @@
  * @uses Walker_Nav_Menu
  */
 class Walker_Nav_Menu_Edit extends Walker_Nav_Menu  {
+	
+	var $db_fields = array( 'id' => 'object_id', 'parent' => 'post_parent' );
+	
 	/**
 	 * @see Walker_Nav_Menu::start_lvl()
 	 * @since 3.0.0