--- popups_reference.module
+++ popups_reference.module
@@ -45,6 +45,13 @@ function popups_reference_form_alter(&$form, $form_state, $form_id) {
       }
     }
   }
+  
+  if (isset($form['type']) && isset($form['#node']) && $form['type']['#value'] .'_node_form' == $form_id && !empty($_REQUEST['popups_header']) && $_REQUEST['popups_header'] == 'json/popups') {
+    $form['popups_header'] = array(
+      'type' => 'hidden',
+      'value' => 'json/popups',
+    );
+  }
 }