Tomorrow I am flying BA for my first time ever. I am on the newly restored (?) BA flight 270 , LAS-LHR, on 77W. It looks like 270 was used recently between LAX-LHR but before that it was flown in 2018 on the LAS-LHR route on the now-retired 747s. Pity that they aren't still around.

Anyway I'm in seat 6A which I see upthread is a good seat. When I checked-in, I grabbed 2A and it seemed to acknowledge that choice. Isn't that a first seat? It seems weird it would let me pick a seat in a cabin better than mine. At some point it automatically moved me back to 6A.