I put a global event in the main program <Ctrl-F8> that issues a FormStateClear('') to just clear the form they are parked on. In the menu I added a Clear All Form States option that calls a batch with a FormStateClear('*'), Alternately you could all a separate global event to clear all states as well. Nothing 'magic' about the key combination I selected, was just what I picked at the time.
