When I do a drag and drop operation from my Player's Item Collection "Equipment" (which is a ItemSlotCollection with purpose Equipped) into my Player's Item Collection "Inventory" (which is a ItemCollection Purpose None) the item is ending up in my (Main) Item Collection and my target Inventory Window's Item View Slot Collection Filter to only show Collection "Inventory" is making it disappear. Moving the other way between windows is working though. How does one indicate which ItemCollection you want the drop or move operations to place the item inside?