Can new immigrants in Canada be separated in less than two years?

There was a case in Australia before! They have been married for two years and live apart. They usually don't write to each other or own the same property. Two years later, they want to register for marriage and reunion immigrants through their own websites. Unfortunately, they refused to apply, and now they apply again in our company, although the list was finally approved. But it still brought them a lot of inconvenience, and the woman's business in Australia was ignored for nearly half a year.

Therefore, I think if we must separate, in order to bring unnecessary troubles in the future, it is best to leave some materials that we have contacted before, as well as evidence that we have contacted after separation, which will help you immigrate and obtain identity in the future.