Sorry to dredge up an old thread, but the original question that the OP listed is exactly what I was wondering about.

Now that AA and BA seem to be offering each others' inventory for sale (or at least pretty close to it, from what I've read on these boards), is this still a safe thing to do? I did actually try reading the tariff, and couldn't see that it was prohibited anywhere, but thought I'd seek the collective wisdom around here!