User blog comment:MakeShift/The Crisis and its impact on the Arrowverse Wiki/@comment-24476516-20200123052046/@comment-2054358-20200123064513

When the old multiverse was destroyed and the new multiverse was created all during the Crisis, it's still accurate to call them pre/post Crisis. Should that final battle with the Anti-Monitor really stop us from saying "post-crisis?" Earth-Prime was created at the very last day of the Crisis so most of it's history and the new alternate Earths that came with it would be post-Crisis.