Same for me. The most important part of the notes is History but recently with no reason IRCC redact this section completely. They only should redact security related notes not everything. I feel they are pushing people to not to order the notes by making them useless. Please send a complaint to
https://www.oic-ci.gc.ca/en/submitting-complaint. We need to follow up and make them know that we understand our rights. This is new and they are blocking access to information. During pr, I always could see the history completely as you can see the actual start/end date and officers notes. Even under the ATIP request you select officer note which is included in history.