Doubtless this sudden move back to T3 is also about the looming BA strike as well, to protect BA-BA connections and operations. I can't blame them but as a DFW AA pax it sucks!! I SO appreciated my same-terminal trips this year....sorry to see it suddenly wiped out almost four months earlier than originally planned. I guess the upside is that it MIGHT mean they don't expect a strike before the obvious target of July 22nd when the majority of UK kids get out of school; so I may have a strike-free trip this month, even if I do have to change terminals on the way home. And ultimately, just one more reason not to check bags...