Thread subscriptions: what am I doing wrong?

Ok, ok, it's not funny any more. In my thread subscriptions, I created different folders to try and keep my threads organized. How come when I "move" a thread to another folder they aren't in there when I come back later? For example, I put each thread where I want it. I go looking around the HAMB. When I go back to my subscriptions section, they're all back in the main folder. What the heck!!!! I thought it was me.......we'll it probably is!