To check *A award availability it's best to use the ANA site, then you have to call in and tell the agent the exact flights.
For instructions see here:
http://www.flyertalk.com/forum/bmi-d...sterclass.html
Note that YVR-AKL is only Sun, Wed & Fri. And although biz award availability is quite good on this route except at Xmas/January which is the peak season, the NZ award seats tend to appear between 6 months and 6 weeks ahead.