In this case it is a bit tricky. Unless there a medical request, panel physician can not send for another application. and if you got another MR for another application, they can not do second medical for the same person (as said by my clinic) unless you need further medical analysis. in my case, I did first medical with first IME (for TRV), then when I got second MR with another IME (for PR), I send the proof of medical through email and webform, but CIC did not receive it, then I request my clinic to do inquiry , then they sent my medical exam proof to regional medical officer. the following day, my medical is passed. I think it is better to inform clinic about your second application, they will tell you how they can help you.