Originally Posted by
Gardyloo
I upgrade D>A on AA all the time. First rule of air bookings - when in doubt, hang up and call back.
Is the OP trying to formally
buy an A ticket for the LHR-JNB sector and leave the rest as issued in D? Or are they trying to use points to upgrade? The xONEx rules dont allow the former but there is nothing about the points upgrade in the rules.