User blog comment:Miskos3/Fairy Tail 530: Neo Eclipse, Review/@comment-29778526-20170409192555/@comment-2214433-20170410071239

Future Rogue went from future to present, so the gate being destroyed in present caused it not to exist in future = no time travel. Anna came from past so the gate being destroyed in present didn't affect the past gate.

Of course, we also know that the GMG gate glitched.