Hello, my mother in law has a 6-year multiple entry parents/grandparents visa to Canada. It is going to expire in July this year. She is currently in Canada but needs to go back home (Cuba) next month (March). We have been trying to apply for permanent residency for her during this time but the window was never open. My question, how can I extend her multiple entry visa so that she can come back after July this year? Can I or do we need to apply for another parents/grandparents visa? Thank you.