Hello - We filed extension/visitor record for my parents to extend their stay beyond 6 months due to covid. They received a letter on Oct 20th that their application is approved bu they need to go through a medical exam within 30 days (no biometrics). However, they had already planned to go back on Nov 18th. Should they be going for a medical exam or can we request waiver / let IRCC know of this situation? Please advise.