If you need to return to the original document (without redaction elements being visible), or need to view a different layer of your document, you can unload the Review Layer.
Steps to Unload a Review Layer
After loading a review layer as explained in Load Review Layer, right-click the Folder containing the review layer you want to unload. A menu displays as shown below.
Click Unload Review Layer. The review layer will be unloaded, and documents in the Folder can now be viewed without redactions.