Abbott's citizenship form - "does not exist or can't be found" - FOI request

This whole citizenship thing of Abbott's has been brushed off by the right as something like the crackpot "birther" movement in the US. However this isn't like that at all. It started as a simple bit of curiosity by a blogger and exploded into this great big thing. All Abbott or his office needs to do to put an end to speculation is simply produce the form saying that Tony Abbott has renounced his British citizenship. Simple. It's illegal for a British citizen to be an Australian parliamentarian.

So there was a freedom of information request made to Tone's office. If anyone was going to make a massive effort to find it, it'd be his office. The implications of not being able to produce such a simple document..... well who knows? There is precedent with a by election being held in recent years in NSW when the member elected was found out to be a dual citizen (in that case a New Zealander). So they've looked and looked until they could look no more, and so here is the response to the FOI request: 

 link

Shit Tone, we know you lie, but could you have pulled off such a spectacular lie as this?

And why can't they find it? A document so incredibly important as that getting lost? It beggars belief. I still have my original New Zealand birth cert from 1962. My Australian citizenship cert is put in the "very important papers" satchel sealed between plastic covers to keep it pristine clean. Yet we're supposed to believe the Prime Minister of Australia can't find his papers required to enter parliament?

Full FOI document here.