Hi,
in NZ you can do your Masters if your degree is accepted; I think you might need to register as Physio first. But you best ask the university - e.g. AUT.
Here is the general info: Musculoskeletal Physiotherapy: postgraduate papers and qualifications you can study - AUT University
Musculoskeletal Physiotherapy: Postgraduate Course Contact Information - AUT University
What are you confused about? Can you explain a bit more in detail?
Cheers, Fyzzio