It was explained, right back to Action Comics #590 where John Byrne shows us the remaining earths merging into one, up to Dan jurgens' own recapping a few years ago and showing the main ingredients to be Earth's 1 & 2... Earth-2's sensibilities in particular being something very obvious to see in the remodelled post -1986 Superman landscape.
Quote:At the end of COIE, the surviving characters of various Earths populated the last remaining Earth (E1, I believe).
Quote:There was no indication that ANY of the survivors had their history or memories re-written. No indication that ANY had forgotten about the Crisis except at the very end when Pirate non-sensically says that no one remembers the COIE or the multiple earths.
Quote:Therefore, we are left with the whereabouts of E2 Superman in his paradise dimension and E1 Superman one of the survivors on the lone single earth.
Quote:Then one day Byrne's reboot hits. No explanation as to how/why this happened! None! Is this the E1 Superman rebooted? If so, then how? And why *just* him when other characers, such as Batman, retained bronze age history and memories?
It wasn't the most perfect of change-overs no, but if you were there for the final issues of All-Star Squadron and concurrent Infinity Inc issues circa issue #27, and the final chapter of Kurt Busiek's Legend of Wonder Woman series, you see full well what happened. Having been held back a short while in the wake of the Crisis' conclusion by a combination of factors a final wave of energy washes over reality and the memory and histories of Earth's 1 & 2 are merged into one, with a new revised history to match, and no one (apart from a very select few like Harbinger, Shazam, Darkseid, The Guardians, and Psycho-Pirate) has memory of what the Crisis had fully been about anymore as to them the Multiverse had never existed. All there was was one Universe, and one revised history.
See Here for a synopsis of the relevant All-Star Squadron issue...
1) Is post-crisis Superman a transformed pre-crisis Superman?
2) If so, how?
3) If not, what happened/where is pre-crisis Superman?
4) Did any silver/bronze age Superman story take place or was it all erased?
5) If it's all erased, then why did post-Crisis Superman have pre-Crisis memories of the justice league, the titans, the COIE, etc?