Originally Posted by Wings900-Michael
Ok, I think I got it now. So as long as I'm on UA code it does not matter what airline I am flying on as I will still earn the mileage. Thanks for clearing it up.
That is correct. That is what you are entitled to.
Now keep your boarding pass and eticket until your miles actually credit, i.e. check that the NZ and UA computer systems do handle this correctly.