Originally Posted by
dabee69
True.
Upgraded tickets are supposed to get credit for originally booked class. I booked A and got upgraded to J, should get 150% M&S miles.
There are always possibilities that some other program only looks at class code J and credits accordingly. I'll credit to M&S. IST-LAX is 10298 miles each way. That's good enough for me.
Where did you get that information that upgrade voucher can be used if there availability in J booking class? I have thought that it books in to Z which is the same booking class than in seat guaranteed award?