User blog comment:MakeShift/Discussion on post-Crisis changes to the wiki/@comment-39769115-20200120220434/@comment-39769115-20200120221119

TL;DR: personalisation trumps manufacturing. If a character's memories were edited, they were overwritten from an earth-prime counterpart. if they retained those memories prior to an edit via an outside source (eg: J'onn J'onzz), then they warrant keeping an earth-1/38 page without creating a new one for an earth-prime counterpart. that is before it's revealed that they had a version of themselves that they do not remember on that specific earth post-Crisis. (eg: Flash/Supergirl teamed-up post-Crisis without the pre-Crisis iterations' knowledge. this means that the post-Crisis versions existed prior to the overwritten versions.)