The 1 year was my "safe" guess.Rob_TO said:You are mistaken. There is no such rule around 1 year of having landing papers/COPR.
In general anyone can enter Canada with just their passport and landing papers, at any time, as long as it's by car at a land border.
When traveling by plane the landing papers are useless, as the airline will only accept a PR card to allow boarding (unless traveler is visa-exempt, and before the new eTA rules come into effect).
I don't know how long a PR card is valid, because I don't know if I'll ever receive ours... but if it's 3 years then I imagine that trying to cross over with landing papers that are 10 years old, with no PR card, then I don't imagine they'll assume you're still a valid PR.
There must be some kind of time limit or expiry on your PR status as indicated by landing papers or PR cards would never expire, but I assume the papers are good for at least 1 year. Likely 3.