User blog comment:Jho5689/Fairy Tail 337 and onwards/@comment-5006572-20130622124719

Well I think the dragons and F. Rogue should not dissapear just because the gates are broken. The gates are broken now, so in the current future line it's impossible for Rogue to go back in time using the gates. But there is still an alternate timeline where the gates are still standing (the timeline F. Rogue is from). BUT the Dragons (at least Zirconis) die in the past. So either Mashima DOES make them warp back into time or the dragons or someone else find a way to return to the past. If it's the first that means F. Rogue will dissapear too, but the dragons destroying the city will still have happened. But I assume it's the first since that is common timetravel logic I think, but that would mean the dragons find a way back to the past.