My personal attitude is that the comics were never claimed to be canonical in the first place, and if they're contradicted, that's no different from what's happened to countless other books and comics over the decades.
On the other hand, this episode essentially established that there are many possible branching universes, including more than one variation of the Mirror Universe. So if one were so inclined, one could easily invoke that to reconcile any story one wanted.
On the other hand, this episode essentially established that there are many possible branching universes, including more than one variation of the Mirror Universe. So if one were so inclined, one could easily invoke that to reconcile any story one wanted.