I've had the need to add a bag to a NZ seat only ticket on VA metal this weekend. I'm aware of people who have had plenty of troubles a long time ago with this because it doesn't update in the VA system when you do a product type change in the NZ system.

Has anybody done this recently and had issues convincing check-in staff you've legitimately added a bag?

And before anybody starts "why are you flying VA", unfortunately from WLG it's the only option when flying to BNE.