User blog comment:IHHeroes/Changes going forward after Crisis/@comment-43707041-20200116210045

I think what we should do is set the homuniverse equal to earth prime for all characters we see in this new earth (and deceased for all characters on other earths, ie Harry wells), since I believe they are the same version (and some didnt return on other earths), and since earth-1, 38, Bl, etc never existed even the paragons cant be originally from earth-1. Plus Barry directly called it a merge, not a restart. and J'onn was able to give them back their original memories, as pointed out by Ninja72, J'onn didnt give them his own memories, because he wasnt there when Nash released the anti-monitor, but that vision was shown when Nash remembered.