I blame one of Lex Luthor’s Kryptonite-powered mind beams. If you get hit by one too many times you’re bound to get old details wrong now and then.
That’ll teach you to go drifting about in alternate timelines on your own…
You could search the wayback machine. It’s not like there was ever a guarantee that the servers would keep everything, even after a shit-load a data was migrated to discourse.