Fallen Angels I guess. Tbh, I don't even remember what retcon was introduced in MiM. I read that story once, hated it and forgot all about it the next day. But the retcon I'm talking about is the one that revealed that Kwannon was somehow alive this whole time, but Betsy and no other psychic noticed it. And the fact that Kwannon blames Betsy for "stealing" her body even though that's not at all what happened in the original stories. And also all that crap about Betsy having body dysmorphia...But that one came from another terrible story.