Originally Posted by
jkirsch
You would, however, give up the ability to preselect seats on BA via MMB (at least as I understand it). I think I'd rather be able to go for row 62 than gain the extra miles.
I'm on BA 58 later this week flying on its AY code (CPT-xLHR-HEL) and can't prebook seats on MMB; I'll phone BA when I get to CPT and see if I can do so on the phone.