Originally Posted by thrwwrtlvsn

Thanks for the clarification!
I thought MF code in business is possible given that Matrix/Google Flights/etc are showing this actually (see my first post for reference).

By the way, if you book through an OTA a KL/MF flight, and say you use AFKL FB, I guess that MF flight should be accrued under the usual miles scheme (e.g. miles flown and booking class) whereas KL flight should be accrued under the new revenue scheme (e.g. ticket price - taxes)? But then how does FB know how much the KL legs cost given that the booking is for the entire flight?