NPC Show if mem CLEAR?

Just a quicky, is it possible (not counting entrance events) to do "Show if mem CLEAR" instead of "Show if mem SET" on a NPC in FF6usLE?

I still have no idea what those 4.7,8.5,8.3, etc boxes do (well I know at least one of them unscrambles some item type NPC grapichs like Utros's 4ton weight) but do any of them happen to reverse the show if set line?

I need to "move" a few NPC to a different map after collection. I would like to use just the one bit( show in town if clear, show elsewhere if set type deal) but its not really worth the cussing to write an event on every way to enter the tow or cave just to save a bit.

Not gonna invest to much time on it, worst case I'll just use another bit, would be cleaner to only use one for this "moving" of an NPC.