That's just the consequence of the (incorrect) integration mapping of NF (PMUA) to ON (newUA), regardless of # classes on a flight. But it doesn't really tell us if the upgrade processes that run for 2-class aircraft will look for and process ON waitlisted upgrades in addition to R. Seems like it might not be a difficult fix to patch the upgrade process vs remapping 2-class ON waitlists to R... the former seems like an offline batch process. So maybe ON waitlists will be fine... I didn't want to chance it, and the agent I got was of a similar mind, and seemed to be a wizard with SHARES.