When adding or archiving sections, categories and/or questions, do I still have the data from the previous review?
Creating, modifying or archiving sections, categories or questions and then moving questions around in your standard library retains the data from your previous review. This is because the review you created is like an x-ray in that it is a point-in-time reference of your standards library. If you change your standards library those changes will not reflect in your current review rather, you'll have to create a new review to show those updated sections, categories or questions.
From the Reviews → View All Reviews screen, hover of the review and then click the Details link and then click Report. This will give you a report of that specific review's questions as they were at the time the review was created.