User blog comment:MakeShift/Discussion on post-Crisis changes to the wiki/@comment-858615-20200117125758

I think that until and unless we know how this works, the 'separate pages for Earth-Prime' is the path of most resistance for not much (if any) gain.

It's been said elsewhere that the shows' makers likely intend us to see these characters as a continuation of the characters we've been watching for the past seven-and-a-bit years, though with some new details and history. I agree that seems the most likely. And the wiki has coped with that before with Flashpoint and such. (Well, mostly Flashpoint.)

The dialogue refers to Earths being merged, not done away with and replaced with a mixed-up copy. And none of the characters (who, granted, don't have external viewpoints) are acting as though almost everyone they knew died and was replaced with a copy. (And anyone who knows a Laurel Lance or a Harrison Wells can relate to such an idea.)

The idea that there is, say, a native-to-Earth-Prime Kara who died when Earth-38 Kara took over her consciousness is...well, it's a possibility, and it's not unsupported by what's onscreen, but it's a stretch to write that out definitively.

Separating the two multiverses seems wise for now, though maybe at least noting things like the resemblance between the two Earth-96s.