User blog comment:Itamar20112/My thought on the wiki post-crisis announcement/@comment-43707041-20200116231242/@comment-2054358-20200122223955

Yeah, it really did break the wiki. Not only did it put a lot more shows and movies in the Arrowverse, that the admins had to ignore most of them for either small cameos or continuity errors, the Earth-Prime split completely breaks our wiki with a policy about never assuming doppelgangers similarities until confirmed in show, and most of the major characters have their pre-Crisis memories restored so it's even difficult to sort out the backstories. For example, Post-Crisis Earth-2 Laurel told Mia about how Earth-2 Oliver screwed Sara on the Queen's Gambit. But's very difficult to sort out if that event really happened on post-Crisis Earth-2 because Laurel has her pre-Crisis memories and she never went back to Earth-2.