[curt.clifton]

The only other thing I can think of is that you might be getting duplicate items. This can happen if you accidentally hit Cmd-D, the duplicate hotkey. Another way of getting inadvertent duplicates is to mark an action or project as repeating. OF automatically duplicates a repeating item when you check it off.

It may also be worth taking a look at Perspectives → Show All, just to be sure that the items you think have disappeared aren't really just being hidden by your view settings.

Cheers,

Curt