How does it work in this scenario-

2 pax, 1 pax is gold and one pax has no status

Original reservation was one pnr but auto-spilt due to waitlisted upgrades

Does the fact that this was originally one pnr booked under gold come into play and would showing a hard copy the original itin and e-receipt showing the original booking come into play as the auto split of the reservation is no fault of the pax