Thank you. We have the same scenario, my mom had her medical on April 2019 for visitor record.A medical was requested by cic and completed in April, 2019 as part of my mom's visa extension for her visit in Canada. I gave the immigration medical doctor in Canada my email where they sent me a copy of the "eMedical information sheet".
CIC requested medical test or proof by email yesterday (I missed the request on ecas for weeks) so I then sent by webform and email.
To your question, I submitted the old eMedical information sheet that was issued to me back in April. Medicals are valid for 1year.
For your case, I wouldn't worry. It maybe dependent on the LVO. I used the accra email address.
When we received the IME request, we submitted the EMedical Info via webform (twice - one week apart) and then, I again attached it with the PCC requests, etc through email.
Unfortunately, it has not been reflected on her file yet. The thing is, it was her due date yesterday (for the new medical request). We checked my mom's account today, and it says "we did not receive your medical results", so I called the call center and inquired about it. The agent said that they received the Medical Report that we sent, it's just that may be the officer has not gone through it yet that's why it's not yet uploaded to her account. She suggested to wait or send another webform inquiry to submit the Medical Report.
Honestly, I don't know what the next step is, but to wait and hope that there will be movement on my mom's file next week.