Remdical was requested on 29th July. I raised a webform asking the reason for new medical since upfront medical is still valid and attached upfront medicals with it. But still, wife completed medicals on 18 Aug.
Meanwhile, the webform got added to the application and I got a new medical request( with a different IME) for my wife once again along with a request letter on 19 Aug.
It was written like this in the request letter :
"Medical: Please be advised that in order for your application to be approved, you must complete the new Immigration Medical Examination (IME), as the validity of your previous IME is expiring within six (6) months. Please note that a new IME request has been issued to you, to which you must present to your panel physician. Thank you for your understanding and cooperation. This must be received at this office by: 2021/09/19.
Please note that the requested information/documents must be received within 30 days from the date of this correspondence. Please upload these documents to your MyCIC account."
There was also an option provided in CIC account to upload document. I uploaded the medical report that my wife completed with first request and kept a letter along requesting to consider that report on 20 Aug.