Curious things happening if PNR contains AA sector
I go LAS-LHR every year and this year I thought I would shake things up a little. I therefore booked LHR-DFW-LAS (AA) and LAS-LHR. All booked on ba.com.
Once I have made my booking I am used to be able to select my seating (since I have status) and also upgrade to the next cabin with cash.
Curiously, I can only change the allocated seat for the BA segment, not for AA. From previous posts it sounds like I have to call AA, get their record locator and then log in to aa.com to change my seat?
MMB usually also displays an upgrade cost, sometimes I upgrade myself to WTP+ but in this case that option is greyed out. If I call them, will they be able to upgrade me for the BA segment, for cash? Will they have access to the same offers as displayed within MMB?