Thanks for your response. Agree if they resend the letter to do medicals or biometrics there's no choice but to do it again. I do find that inefficient because in my mind everything should be linked to UCI. It's also more expenses unfortunately...
Can they travel to Canada on super-visa in the meanwhile, and if they get a request for medicals or biometrics then they can do it here in Canada? Basically finish rest of the process within Canada?
You can use the medical again if done within a year but expect you will need to do another one given processing length