You can copy reviews from a product to another in a few seconds without using CSV.
Note: This feature is available on Ryviu's paid plans only.
STEP 1: Log in to your Ryviu account, open Products sections
STEP 2: Clicking on the copy product reviews icon next to product that you want to copy reviews from
STEP 3: Click the "Copy reviews" button after searching for the product you wish to copy reviews into.
If you want to copy reviews for a product that does not exist in Ryviu Products then please select the option "To new product" then enable product name or product handle
If you do not know how to get the product handle, you should take a look at this article.
If you have any queries, please let us know via email or live chat.