User blog comment:FairyRaven/Fairy Tail Chapter 337: The Golden Plains, Review and Commentary/@comment-2214433-20130628095736/@comment-7418318-20130628103003

Then explain to me how that change in the timeline can only affect the timetravelers.

Why is all the destruction staying? Why are the wounds on the survivers still there? How come everyone remembers the fight against the Dragons?

That ancor theory explains all those questions in a neat way.