Hi,
NZers have always been leaving for OZ to work as the pay is better. Also for Physios, getting registered is easy. That hasn't changed over the last 20 years.
What is different these days is that there is not much work in NZ.

I have just talked to a British Physio who said that on the new application form you have to sign a statement that you intend to work in NZ. Just a little warning for applicants who apply for rego in NZ in order to work in Aussie. :-)

Cheers,
Fyzzio