How to disable April Fools Inversion

[stiffys]

I'm attempting high round zombies runs and restart the game only to be inverted, got to be a way to disable this maybe it isn't an option but what file do I need to replace or edit to turn this off please and thanks!

[FixProtoss]

How do I disable mirrored map PLEASE!

[Berm]

launch in lan

[DontStopMeGaLo]

Now I wanna know, how to enable it, lol