Originally Posted by
gbeb
If it was an AUP, then they would only credit for J.
What's been said before is right, you should either
1. Claim Original Routing Credit (see BAEC forum for a good advice thread), to be credited for your original segments only
2. Leave it how it is
Of course, you could ask BA to credit the flight IAH-LHR, but if they look at the ticket details, they may well decide to just credit the segments booked/palm you off to QR/just say no.
Not on BA/BAEC, as far as I know. AUPs gives TPs and Avios of the upgraded class, not the "old" one.