Importing reviews using csv

On this site there is a csv file that lets you import reviews: https://wordpress.org/support/topic/import-previous-reviews/#post-10840655

1. Is there an updated version of this csv that also includes categories?

2. There are many duplicate columns with the same content like “post_content” and “_content”, “post_date” “_date”, etc.
Is it necessary to fill out both columns with the same content?

Thanks