I would like someone to clarify, after receiving a new OZ passport, then having to re-apply again for a marriage extension, to be put in my new PP and as I am led to believe your original passport is cancelled when you apply, How soon must you go to Immigration on receiving your new PP, I would like to delay doing the extension by a month as I want to apply early for new PP. After all how would immigration know when i actually receive it. ?? hope that's not a too convoluted question.