Yessum!
Go here
https://atip-aiprp.tbs-sct.gc.ca/
Scroll down and hit "Continue"
Choose "My Personal Information" and Next
Tick the check box and click Next
Choose CBSA (should be the first one on the list)
Next pay will ask you to go to a sign in page - so choose that (as you will need to it to recieve the files electronically). Sign in with your GCKey account (or create a new account)
From there you just follow the bouncing ball, answer the questions. In the request details you will need to supply your Application Number and a few other details. In the request details ask for your GCMS Notes for Citizenship Application.
Takes about a week or two to come back