Hi and welcome back to Flyer Talk mhaines94108

This isn't really a problem for oneworld4u so I've split your post off that thread.

Kiwi Flyer
OW moderator

[mod hat off]

Was this booked as a codeshare by any chance? If it was AA flight number but MA metal then the AA booking class gets translated into whatever the equivalent is with MA. Earning is then based on that code. Same applies in reverse (MA flight number on AA metal).

Also multi-sector fares may have some legs in a different booking class than other legs (it is specified in detailed fare rules how this works - depending on which site you used to book summary fare rules may not spell this out), particularly where there is a mixture of longhaul and shorthaul.