Also, to confirm my understanding... for a PNR with more than one person, one RPU/GPU is needed per direction per person? So if it's two passengers on the PNR would need four total to upgrade outbound and return? And if only one RPU is applied to one passenger (via "edit travelers"), then the PNR will be split to accommodate?

What happens if the instruments are applied from different types of accounts (GS and 1K), do they clear individually according to that status, or clear according to highest status?