Yeah I think it is tricky to know if it will be returned and why, I submitted a notary declaration we did like 1 year ago. Now I will be adding some receipts to the same address for both my girlfriend and me, just in case the document isn't enough. If you are having doubts about it, it is always a good idea to use the web form to submit additional documents or so.Can I ask what you uploaded as proof of common law? I'm in a common-law relationship too, and I'm worried about my application getting rejected because of that document.