The FlexGrid relies on the CollectionView class to perform data operations
including sorting, filtering, grouping, paging, change tracking, etc.
By default, the CollectionView re-applies the filter after any edits.
You can change that behavior by setting the refreshOnEdit property to false.
If you do that, the CollectionView will not apply the filter when you edit items.
It will re-apply filter only on demand, when the user edits the filter conditions.