Ideas for a revival.

I was thinking about a solution to the problem of combining the settings of "The Restoration of Erathia" and "Darkside of Xeen" (both take place in a post-apocalyptic Xeen). The answer is simple, although a bit silly: During the Cataclysm, the universe split into two. In one, the world of dying Erathia evolved into Aschen (The Restoration of Erathia), and in the other, the world of Aschen was created and lived through its evolution over several hundred years, far from the Reborn Xeen (Darkside of Xeen). I agree, it's a bit of a stretch, but I can't think of anything else. And the fact that Sandro is in both can also be explained.