User blog comment:TimeShade/The Crisis Has Arrived/@comment-28109177-20200115202757/@comment-2054358-20200115234653

Was Earth-1 Alex even real or was she just a creation of John Deegan using the Book of Destiny? She could be Earth-38 Alex with her memories rewritten. The Earth-38 characters don't seem to have Earth-1 dopplegangers, and the Earth-1 characters don't have Earth-38 counterparts. The only people the two worlds have in common are real world celebrities who have been mentioned in pop-culture references. So Earth-38 could have easily been combined with Earth-1 to form Earth-Prime without any changes except new memories of eachother and the only real casualties would be the historical figures the Legends ran into that have been mentioned on Supergirl. As for Black Lightning, the Earth-1 dopplegangers of his family are gone as the Earth-BL version of Freeland replaces them.