Although I cannot answer your question it would only be normal behaviour of any government agency to put the citizenship application on hold.
In my opinion DIAC will question and further investigate why somebody never set a foot into the sponsored state will in any case cause at least delays or any forms of discipline action. However, DIAC wants to know if you have permission for leaving from the sponsored state or not. If you have permission everything will be all right. If not then they will at least investigate...
We always stick to the rules, give it a go for 2 years and won't have any problems afterwards when it comes to citizenship. It's a contract, no matter if it's 'only' a moral obligation or not.
People who don't adhere to rules will get into trouble sooner or later, so it's very short sighted for migrants who wish to become citizens not to stick to Australian migration rules.
I would recommend that migrants take SS very seriously. We're all adults and as adults people who are not willing to settle in the sponsored state can gain permission to leave from the State Government. It not only makes sense, but all hassles and delays can be easily avoided.
