first, to make it clear...I'm not trying to get credits with 2 programs for 1 flight...
my situation is...I took a roundtrip in discounted business (class I) with AY a few months ago, and have one flight credited to CX and the other credited to BA (EC US)...in the attempt for 2 x 100k...
the CX one came out ok...but with the BA one, I have been advised that class I on AY does not earn miles with BA (EC US), although it earns miles with the FFPs of CX, AA, AY (and maybe other as well)...
so my question is, now I haven't got credit with BA (EC US) for that AY segment, I assume it is ok for me to send in the boarding pass and ticket copy to CX to get credit for it ? my only concern is that they would argue I have already given my BA number for that flight (but, again, BA did not give me credit for that flight)...
Thanks !!