If your reviews are not exported from one of the providers (your previous review app) that is mentioned in this article, do not worry. There is another way.
Step 1: Download Superdesk Import Template CSV. (Please also check a sample CSV that is filled with sample reviews - just for demonstration purposes).
Step 2: Each row in this CSV document means a single review. Fill the template by entering one review into one row and so on. Please do not modify the headers of the CSV file.
Step 3: After filling the file with all your reviews (each row being a single review), save the document and export it as a CSV file. Make sure that the text encoding is UTF-8.
Step 4: Go to Superdesk Admin > Click "Manage Reviews" > A sub-menu will expand open called "Review Settings" > In the bottom of the page click "Import Reviews" > In the "Previous Review Provider" choose Superdesk Import Template