I think 30-some percent are relatives of Canadians who are already here, so they'll certainly be there. The others, I think, are still gainfully employed in their own countries and are waiting until they get a decision, so there's no reason why they would necessarily go unless they left for another country, which is a possibility, of course.
I have no idea, but I would suspect most of them, if given the opportunity to come to Canada, even if they may have moved to another country, would still take that opportunity and get back quickly to get their visa.