User blog comment:TimeShade/The Crisis Has Arrived/@comment-28109177-20200115202757/@comment-2054358-20200116011158

Well, even so, I think we should treat every Supergirl character who continues to exist on Earth-Prime as the Earth-38 characters with their histories continue on the Earth-38 character pages. Earth-1 and Black Lightning characters can have their Pre-Crisis pages continue to be updated with life on Earth-Prime, just like when Flashpoint altered the lives of Earth-1 people without additional pages. New characters introduced post-crisis episodes are Earth-Prime characters. Unless you want us to start every page over? Might be more difficult to rewrite every page with only post-crisis information when J'onn has restored the memories of every important character's Earth-1/Earth-38 lives so it can be difficult to sort out when someone makes a reference to a previous episode whether that event actually happened on Earth-Prime or it was a memory J'onn restored. So I think we should treat the creation of Earth-Prime like another change to the timeline. The paragons did go back to the Dawn of Time to recreate the Multiverse, so it's pretty much a multiverse-wide Flashpoint.