Here's a thing I don't get...
So in the alternate timeline, Lucy closed the door, and the dragons came.
In this one, she fails to close it, and the dragons still come through.
I'm pretty sure future Rogue witnessed her closing the door in his time, since in the current timeline he was there without the influence of either his future self or F. Lucy. Therefore, there seems to be an inconsistency going on. Hopefully it'll be explained.
Perhaps their actions didn't matter. Perhaps Eclipse would open itself anyway and let the dragons in. Somehow the dragon slayers must have been sent to the future 14 years ago (finally explaining the over 80 year thingie yay). That means in the past they could control the gate, or someone in the future opened it for them.