Omega Alpha is right, they reversed it because Wanda was cracked who thought people were legos and even altering their personality. She was also becoming increasingly unstable
I remember that Saturnyne said it was disrupting the entire multiverse and she sent Elizabeth and Rachel into the reality bubble to either seal the M-Day Earth off from all other realities permanently or reverse it!
We are MUTANT..Krakoa, FOREVER!!! “Liberté, Égalité, Fraternité”