Collapse area not working?

[KeysOfMyMind]

But that would mean loading in between and people knowing like oh a new map is being loaded, it might be different.
I wanna do it on the fly while the player is in one room searching for stuff have the hallway change completely while he's in that room.

without any break in the action.

PS: the monster AI is so stupid it's unbelievable.

I set up path nodes right, the first 5 are fine he goes from node to node in a nice straight line, but then I'm trying to have the monster go through the door and down the hall but he just stands there completely bugged and I'm stuck in the closet with no other way but to alert him and run for my life and die in the end.

Suggestions?