Hi There, I removed my case representative recently (as he passed away) and its fairly simple process, no side effects for you at all. You will need to do the following:
1. Fill up the IMM5476e, sign it (both primary and secondary applicant must sign) and upload it through a web form.
2. In the web form content, highlight that you want to remove your case representative, and would want them to send all the future communications directly to you.
3. Provide in the web form your personal email address, where you would want them to send all the future communications.
4. Submit the web form.
They will reply to your web form on your newly provided email ID in 5 business days(for me took 1 week).
5. Meanwhile, you can create an account on GC Key (
https://www.canada.ca/en/immigration-refugees-citizenship/services/application/account.html), click on continue to GC key', sign up here.
6. Once you start searching your application here in this space, please ensure you use the same spellings, combinations as exactly mentioned on your passport(e.g. place of Birth, city of birth etc.), donot forget to add spaces if you have added them on your passport.
7. Once your application is located in the database, it will tell you that you already have a representative and would need to remove him first.
8. Now, submit the same form as you submitted in point 4 above(IMM 5476e), and at the next step, you will see you application linked to your GC key account.
So net-net, you achieve the following:
1. You can check your status through both ECAS and GC Key now.
2. All future correspondences will reach you mail ID now, so no worries going forward.
Hope this helps.