Thanks. I am aware of it. But I am taking them for a holiday and hoping that re-entry will revalidate their stay.Why are you doing all this??? One month before their visa expiry, apply for visa extension. The decision for visa extension comes in 4 months which means they can stay in CAnada for 4 months. And hopefully you get PR decision by then. You can apply online and fees is just 100$. Online extension must be submitted atleast 1 month before expiry.