Originally Posted by
Himeno
FFP don't earn based on trips. Each flight can have its own FFP attached (though connections could make this hard).
There is no reason a 10 leg xONEx couldn't have each leg direct points to a different program.
Just go into the booking after you've flown the 6th leg and change the program over.
IIRC there is one field for FF number in each PNR. So wouldn't you have to change the FF number before each flight if you want it to be different from the last one?