Originally Posted by
Oneworldfflyer
I have a similar situation with you since I will move up to Finnair silver status (Oneworld Ruby) very soon and I am currently a MPC green member as well. Recently, I booked a flight AMS-HKG with CX and my default FFP is MPC. The question is: Do I have to update my Oneworld Ruby status with CX or the crew will see my latest status and print my boarding pass with “AY/RUBY” rather than “CX/GR” without informing them? I would also like to keep earning miles with Asia Miles but not sure whether it is still possible.
1. CX will have no idea that you are an AY member, whatever status, unless you told them.
2. If you want the crew to see AY/RUBY, there's no way to also earn MPO/AM (and you can't unbundle them). It's whatever FFP you print on your last copy of BP that matters.
3. You already have priority check-in with GR. Unless you are booked in SNQOX classes and need to select seats, I don't see any other benefits you would get as an AY/RUBY as opposed to CX/GR.