Originally Posted by
lots@LHR
I just today successfully upgraded SIN-DXB-GLA from business saver (paid) to First (miles). I paid 68,250 miles, a far cry from the 90k i'd have needed to do sectors one by one.
That's a route that shows up as "not applicable" in the mileage calculator which makes it even more likely the issue reported here is a bug rather than a downgrade. Or maybe still a WIP.