So this is an answer I found, totally by accident, to a question I asked a few posts above about modifying the map items using the map controller. It seems that the toggles and controls do work on what I think are the original maps. I've tried it on two and you can move the individual items in the map using those controls. Finding each item is a bit tougher as the naming isn't ideal and not all items are actual items. For example in the classroom map the doors aren't actually doors, they're just one piece with the wall. But you can actually move the desks and chairs around no problem at all.
In case anyone else wanted to know.
In case anyone else wanted to know.