That's what my understanding is as well.
As mentioned before, Service NSW says that to update the rego i need either a Vehicle Compliance Certificate (if applicable) aka Engineers Cert, AUVIS (unregistered vehicle inspection report) or a HVAIS (heavy vehicle unregistered vehicle inspection report and heavy vehicle safety check inspection report).
I will get it engineered either way, so my understanding is, in terms of documentation, I just need an Engineers Report, a filled Change of records form and fees to "re-register" it.
Car is still registered so technically its just a change or records aye?
And if it goes out of rego, according to their website ill need either one of those three things mentioned above to register it?