Transfering reviews between two servers

Hello, i am seeking help in transferring our company’s reviews from what is now our temporary site to out new website. I’d like to know if this can be done through FTP file exchange or if it is a lot more complicated.I am aware that as a admin i can possible manually input reviews. I’d appreciate any guidance or help from the community.

https://wordpress.org/plugins/wp-customer-reviews/