Review Files to copy and paste after website migration

Hi Support, I have recently migrated my website to the Google Cloud. It seems my google feeds now no longer work. I believe a re-install my fix this.

However, I do not want to loose all my reviews and the export function also does not work. Please can you advise which files to copy and paste from the old installation to the new for the reviews to still work – via cPanel I have access to both the new and old files.

Regards

Hendi