Share for Review
After sending out a "Share for Review" in InDesign, I went back to the file after people made comments and when I go to the review, the only option is to create a new review. But if i go to my email notification and click on the link, I can see the review that way. I did not "save as" to the file.
Open the Review panel (Window>Comments>Review) to see the comments made by the people with whom you had shared the document for review.
Please let us know if this solves the issue for you.