             _sut.filterFunction = allowAll;
             _sut.refresh();
             var positionOfNull:int = _sut.getItemIndex(null);
+            const positionOfFirstWorkout:int = _sut.getItemIndex(_firstWorkout);
 
             //when
             _firstWorkout.dispatchEvent(PROPERTY_CHANGE_EVENT);

            _sut.filterFunction = allowAll;
            _sut.refresh();
            var positionOfNull:int = _sut.getItemIndex(null);

            //when
            _firstWorkout.dispatchEvent(PROPERTY_CHANGE_EVENT_UPDATE);

            //then
            assertTrue(positionOfNull != -1);
            assertEquals(-1, _sut.getItemIndex(null));
            assertEquals(positionOfFirstWorkout, _sut.getItemIndex(_firstWorkout));
        }

        [Test]
