Originally Posted by
Christefan
When I log in to the UA website to book, I use my UA number since I typically have to take a feeder flight on UA to connect to LH.....no longer. LH is history for me.
Well, this is an interesting point. If you are *G with Lufthansa, what difference does it make if your MP number is associated with the booking? Even if you're just FTL, you can enjoy all your benefits (except E+) if you just wave your card at anyone at the airport.
Were you by any chance trying to double-dip? Did you book with your MP number, and used it for the feeder flight (to credit to MP), and then somehow changed it to M&M just for the TATL segment?
There are two frequent flyer values on a booking, FQTV and FQTS. FQTV is where the miles are credited; FQTS is which benefits you're using. If you were switching FF numbers mid-travel, what could have happened is that only FQTS was changed (and that's why your BP showed your SEN number - it shows the benefits status and is completely unrelated to crediting) and FQTV was still on MP.
This is why, if your miles are critical to attain your status, you should never ever gamble with dual FF numbers, even at the cost of losing a few benefits.