Room parent / exitformat weirdness
This sounded more like initial game (all staff, all game-owned) building, sorry if incorrect.
Well yeah, all grid and game owned spaces should be owned by the same bit, no question. But because you can write your own security check, a user-defined function would be a more global fix.
It does, however, answer why everything was working fine until the ownership changed. Tres bizarre, but strange question solved.
@rook Yup, I'm aware of these things. Thanks for the tip, though.
Sorry, Cobalt, that was less for you and more for follow-on readers of the thread, honestly. :)