Just booked an award from JNB-LAX via Asia with one of the legs, SIN-PVG, being on Juneyao. Aeroplan shows all my confirmation numbers for SA/SQ/UA/CA but none for Juneyao and says to contact the airline.

Aeroplan said they "don't have a confirmation number available" and Juneyao... well, not the easiest call center I've ever dealt with.

I'm just trying to select a seat on the leg to PVG, anyone have any experience with that on HO?