In the catalog, while editing a drop table, there is no way to filter the items by class. We're currently adding and removing items to our catalog, and we need to constantly update droptables to reflect these changes. We have droptables set up for all items of each different ItemClass. It's a pain to have to click add one by one, so we'd like to be able to filter the catalog by ItemClass and then use the Add All button. But the Item Filter doesn't seem to work for ItemClass; only for ItemIds and Names.