Kms earned depend on the metal that is the flight actually flown on. The easiest way to check is to us the US or AA website and see who is actually operating the flight. I've got my Comodoro bonus on US ever since they came to OW. How things will be handled after April 1 remains to be seen. I've also got segment credit in the past when I got routed from LIM to LAX via MIA when I booked the ticket on lan.com, not sure if that's still true.