One already can not earn AA miles on BA US-UK or vice versa, so that may be what the agent was thinking of. Otherwise, I suspect the oneworld agreement pretty much says you got some rubbish over the wire unless Challenges were to be restricted to AA miles only for some arcane and currently unknown reason.
Originally Posted by chewy3
My friend just called to sign up for the gold challenge and they told him that as of jan 1 BA flights will not apply towards a challenge! Has anyone heard this/can anyone confirm this or was this just a doppy agent?