Can i know what went wrong at your trip?
I am not sure if you carried the documents but people move with furnitures and household goods across the canada-US border and not seeing much issues as long as we have correct documents and purpose.
1. They would accept it as people move all the time after logging the application. Just get the address proof to show that you moved which should be enough. Yes change it during the interview or even call them before to update it if they can.
2. I took uhaul to take my things. No issue at cbsa. when i was returning i was asked for passport and questioned whether i will still be working in US or moving permanently to Canada for which i answered that i would be commuting daily and will be working in US. I should have carried my other documents such as I797, payslips etc. Also the stapled extended I94 was not in passport and he was asking what was stapled and why it was not there. Later he asked me to show the license to verify that i was staying in detroit or not. So better carry full documents for canada and US when you are taking uhaul so that it wont be problem at both sides.
Thanks for the response. What license they asked to verify you were staying in Detroit? I think we need to have Ontario Driving license when we are living in Windsor.