OW Sapphire: Can I swap out my AB number for AA?
I have gold status through AB (OW Sapphire). Once I've selected MCE seats for free, can I take my AB number off and put my AA number back on? I'd of course rather earn AA miles than AB.
What about for lounge access? Is showing my AB card enough, or do I actually need to have my AB FF number on the boarding pass?
I understand that I wouldn't get Priority Access, but the most important benefits for me are the complimentary preferred/MCE seating, and the lounge access. I'm content with the single checked bag and the group one boarding that my AA credit card provides.
I have read through some older threads with info about this, but didn't want to bump them. The info provided seemed uncertain/inconsistent, so I wanted to see if anyone had any recent experiences.