[freetonik]

That’s strange. I was able to renew a work permit in Canada while staying (and continuing work) in Canada. Same for study permit. This was over a decade ago, so perhaps things have changed.

They also were not called visas, but permits. Visa is for entering the country, permit is for staying.

[annagio_]

The article is about U.S and not Canada. Also yes, you can stay in Canada while apply + wait for the final decision, but if you get rejected, you have to leave. Also in your application, you have to state where you applying from. I find the Canadian immigration system clear and fast, login, input data, pay, wait.

[brimwats]

you can renew the same permit without, but you can't go from one type of permit to another (student to working prof in my case) without flagpoling; you also can't go from a visa to a permit without flagpoling