IRCC can always ask for a medical. Did anything concerning show up in your parents’s medical last time? There may also be concerns that your parents intend to visit for a longer period of time given previous supervisa application.Thank you so much for quick reply. i just logged in ICC tracker and found :
Application Status : In Progress
Application Type : Visitor Visa (Temporary resident ...)
Background Check & Medical Exam: these both are in Progress
Eligibility: Complicated
Biometric: Complected
Should i send web form to decline the medical due to TRV application