Today canada announced that visas would no longer be 10 years or passport validity. I had applied for a visitor visa for my sister & her husband. They earlier had a visa which expired (due to passport expiry) and they never travelled to Canada. I put in date of travel in december in the application, but now they booked tickets for June 2025 for 4 weeks of travel to Canada. With this new guidance, what if they only get visa for december? I have booking of tickets details, can i reach out to IRCC and update my application in terms of days of travel?