Hi Mike,

That website you gave (proarchives.imagineering.com) is one of the PRO of Victoria websites.
Are you sure it wasn't the Unassisted Immigration to Victoria index you were looking at, rather than arrivals in Sydney? Because this would make a big difference when looking for their passage to NZ.
The NZ Soc. of Genealogists transcribed passenger records between Victoria and NZ over a number of years, but these were during the 1800s.
If you have seen a website for passenger arrivals in Sydney after the 1800s would you please post the URL? Thanks.

Sue