The booking engin and everything else accepts NZ as a FF partner.
But! The SAS easy checkins read the card and the number fine, but in the list of FF programmes NZ is not listed! :-(
NB - this only occurs of course if you are changing your FF number from something else to NZ or wish to add it.
Incidentally as well the SAS system does not recognise NZ*G as gold, not in the boarding pass, not on the manifest never anywhere.
Mark