The questions, ideas, comments and understandings on this thread just goes round and round.
The simple answer is to call centrelink Hobart who look after all things related to pensions and overseas Australians - simply state your case and ask for their ruling.
Asking the experts here is about as useful as asking your local centrelink staff - usually useless as they don't fully understand.
I've always found Hobart to be very accommodating, straight forward and helpful, if overseas they will promptly return your phone calls.