Is NZ booking made on airnewzealand.com.au and charged in AUD processed in Australia?

[NM]

When making Air New Zealand domestic flight bookings (i.e. Auckland to Nelson) using the airnewzealand.com.au web site, which is pricing in AUD, will the credit card transaction be processed in Australia and hence not charged as a foreign transaction?

The price is showing pretty much exactly the same in AUD on the .com.au site as for NZD on their .co.nz site (given XE exchange rates). So is there any reason to pay in NZD using 28 degrees card to avoid foreign transaction fees, or just pay in AUD on .com.au site using an AU points-earning card?

 

[eric2011]

Charge in Australia, pay in AUD

 

[NM]

Charge in Australia, pay in AUD

Yes, but my question is whether the transaction is processed in Australia. There sre plenty of businesses that have a .com.au website, transact in AUD, but process the transaction outside Australia and the payment is treated as a foreign transaction in incurs ~3% foreign transaction fee.

I assume Air NZ do transact in Australia, but I would like confirmation from others' experience.