I agree. It is a bit odd! They simply and easily can get a detailed report of leaving Canada and entering Canada from the CBSA. I wonder if the passport request is just a way for them to see all of your stamps and trips and travels. For example, you leave Canada and while you are away you go, travel, visit other countries. Because it makes no sense why would else they ask for the passport(s) as they have access to all the info they need to confirm physical presence? Maybe due diligence...No I don't. I have not stepped out of Canada since becoming a PR. I was wondering why as well