I'll just add your other question here to make it easier:
Not really sure; I don't know if any offices are open, they should be though. You should call UNSW and enquire about it - this shouldn't require any ID (I've never needed to tell them my ID for phone calls).
If you meant on the transfer form, you could fill everything out except that, then when you enrol and your ID is made, you could get someone to add it then. If you can't enrol immediately, you could ask a trusted friend or family member to do it.
I'm sure most (if not all) will be credited, especially if it's from USYD.