Are you looking to you previously wrote, or are you submitting a document for someone else to review? Chapter IV: Updating a review | Cochrane
If your experience with a business or product has changed (positively or negatively) after an update, you can modify your original feedback: update only
To provide a review for an update, the process depends on whether you are or adding a fresh one to a new version of a product or service. Updating an Existing Review Are you looking to you previously wrote, or