Mostly about refunds:
https://www.rnz.co.nz/national/progr...flight-credits
Though on the online credit redemption:
Wallace said 55 people were working on a digital platform which would be released in late July and would allow people to use and see the credits.
Shifted from June to late July

Annoying as the bulk value of my credits is Trans Tasman and long haul, so would really like the ability to split/merge, as would like to use them on domestic flights. My understanding split/merge credits is currently not available on the phone and waiting for this series of changes to be in place to allow it.
If AirNZ wants to gets people flying the online redemption with split/merge is a good way as there is money there to spend.