I think your requester might have selected the other option while requesting the notes, I mean, while you are making a request to CIC for the GCMS/ CAIPS notes, you have to select what type of record do you want to get, they give the two options
1- The electronic notes (In which the officer review is mentioned in the last - I think you are referring to and want to get these)
2- The application, forms and correspondence (I think your requester have requested these records)
I'm attaching the picture for your reference (Click on the image for enlarge resolution)