Ahhhh, IIUC a review has both a set of code comments and a final "top level" comment that is not connected to code that allows the reviewer to make general comments. All the code comments and the top level comment are connected as a "review". I think when you submitted the comments as reviews they are each the final comment, not code comments and the result is a set of reviews without code comments.
When you click on a line to leave a code comment there should be "start a review" button, and then when you click on other lines lines you get "add to review" and there is a "finish review" button in the upper right where you submit it with the "top level" comment.