I. I just spent an entire commute contemplating how to naturally segue them from battle for bermesiah into xenia because the current dialogue is batshit insane and doesn't make any sense!! Tbf even pre major retcon (putting silver land before ellia, which was a bad move, by the way!!) bfb dialogue didn't really make much sense, so. I. I connected all of the dots. I connected dots that didnt even exist and im honestly so impressed with myself
1. While in ellia, they get a telepathic message from lenasien, like in canon, but THIS time, he tells them that an oracle has prophesized that the grand chase's homeland is in danger from dark anmon, and that he is telling them this in the hopes that they will return the favor by coming to their aid in xenia afterwards. Said oracle is, of course, amy, and she foretells that they are the only ones who can save xenia from the growing darkness.
2. They do, in fact, as the NAME IMPLIES, travel back to berm (what the heck were they doing retconning this out????)