The CBSA officers do have access to your file. This is how I know... in Oct 2011 I was asked to leave for over staying my visit...immigration officers had came to our door took my passport I had to go into the immigration office here, when I went in I explained that we had wanted to apply common-law but had to have a yr living together. I had even went to that very office and asked what I needed to do and was informed we just needed to live together. the lady had given me the application and she wrote everything down for me which happened to be on letter head they used at the office, thank god. Anyway since it was miscommunication I was just asked to leave on my own she explained to me how to do it the right way. Gave me the receipt to take to the bank to prove the fees were paid, I was to use it when crossing back over cus the information could take up to 3 months to get into the CBSA system... now I understand the 3 months, thats how long it takes to get sponsorship approval.
Waiting sux!! big time!!