Yes, International Medical Graduates have the ability to upload a medical school transcript and a Medical Student Performance Record (MSPR/Dean's letter), themselves.
To upload one of the above documents, you must do it from the "My Documents-Document Tracking" section of your CaRMS Online account. Locate the document type and click on the back pencil icon located on the right of your document type, under the "Actions" column. This will open a small window that will allow you to browse your computer to retrieve your saved MSPR or Transcript (in .PDF format). Then click "Upload".