The ticket is on Lufthansa stock. The segment is a pure LH flight on LH metal. The first UA person I talked to, pre-booking, said it is upgradeable for 35,000 miles (Europe to Asia) but now that it's ticketed the next UA person says that Lufthansa specifically does not allow upgrading of discount fares and RTW fares. I have no idea where she was getting that from, but I'm trying to find out now what booking class that segment is in and then I guess I'll try with another UA person.