RTF is a global modification that replaces all towns in the game.

Where did you get this information?
The built-in generator still generates flawed maps with blocks and misplaced guards, but it doesn't create overlapping objects.

I'm talking about standard and custom maps where the objects are already placed, but I looked into it, and the whole problem with the crater turned out to be that the center of the model is shifted. If you move the model slightly, everything will fit properly.