I'm guessing that it is either in ..\data\concept, ..\data\expansions or ..data\gui, but if one of the devs could just point me to the correct .XNB files I would appreciate not having to mass export these folders to find it.
I want to swap either the expansion or original main menu screen with this one:
https://abload.de/img/underrailbyjasonseowo9kjb.jpg
