Uhhh no unfortunately the problem runs a little deeper than simply flipping the wall.... I do appreciate your concern though. You see this doorway right here is supposed to be on that building in the background there
You cannot just simply move a section of a wall. So I don't understand how only small sections of wall are just going missing or just moving around to other completely separate structures on their own. I can delete one piece of the doorway but I when I try to delete the other part I get this error.
I cannot delete the piece the error just repeats and the editor does nothing and then often times crashes.....