--- umc/js/udm.js	(Revision 37565)
+++ umc/js/udm.js	(Arbeitskopie)
@@ -436,11 +416,7 @@ 
 						var found = false;
 						this._searchForm._widgets.superordinate.store.fetch( { onItem: lang.hitch( this, function( item ) {
 							if ( this._searchForm._widgets.superordinate.store.getValue( item, 'id' ) == keys[ 0 ] ) {
-								var handle = this._searchForm._widgets.objectPropertyValue.on('valuesLoaded', lang.hitch( this, function() {
-									this.filter(this._searchForm.gatherFormValues());
-									this.disconnect(handle);
-								} ) );
-								this._searchForm._widgets.superordinate.set( 'value', keys[ 0 ] );
+								this._searchForm.getWidget('superordinate').set( 'value', keys[ 0 ] );
 								found = true;
 								return false;
 							}
@@ -780,19 +755,18 @@ 
 						}
 
 						// a superordinate has been selected and we do not have a 'up' button so far -> add the button
-						this._upButton = this.own(new Button({
+						this._upButton = new Button({
 							label: label,
 							iconClass: 'umcIconUp',
 							callback: lang.hitch(this, function() {
 								this._searchForm.getWidget('superordinate').set('value', 'None');
-
-								// we can relaunch the search after all search form values
-								// have been updated
-								on.once(this._searchForm.getWidget('objectPropertyValue'), 'valuesLoaded', lang.hitch(this, 'filter'));
 							})
-						}))[0];
+						});
 						this._grid._toolbar.addChild(this._upButton, 0);
 					}
+					// we can relaunch the search after all search form values
+					// have been updated
+					this._searchForm.ready().then(lang.hitch(this, 'filter'));
 				})));
 			}