Upvote:1
The OP talks about being approved and receiving a COPR, to get your COPR if you're from a nationality that needs a visa to enter Canada, then you need to submit your passport to CPC; they then return your passport with an immigrant visa and issue you a COPR. Once you've been issued an immigrant visa, previous tourist visas are moot. At this point you can only enter Canada with an immigrant visa.
Departing Canada after completing the landing formalities doesn't jeopardize your PR status, it only makes entering Canada harder without your PR cards. After you become a PR, you need a PR card or PR Travel Document to enter Canada as a PR if you are traveling via a commercial mode of transportation (Train, bus, air etc).
You can only enter Canada with your COPR in a personal vehicle (boat or car or on foot).