Just thought to post general information here for people who are still in doubt.
I rang INZ today and asked them about my visa transfer to the new passport today, they said that the Auckland processing centre is still open under level 3 with limited staff onsite, and hence there is a backlog of files that need to be processed. (20 Fairfax ave)(place u post passport in by courier)
hope this info helps you if you are in doubt. Thanks :-)