Hello everybody!
I have the following problem: there is a TaskStatus attribute in my catalog. It is set for folders and items. In the ListForm the filter by TaskStatus is set. It works for items, but does not works for folders: the list contains all folders even if the condition says to remove them.
Please Help!

To hide empty folders switch the list Representation to List (not Hierarchical List or Tree). Or you can change the catalog Hierarchy Type to Item Hierarchy, in the second case your filter will work properly.