We have purchased an upgrade and want to do it in a 'dev' file rather than live - how do we do that? There are a lot of changes that have been made to our previous version that I need to check and see if they have been ammendied/added in the new version. Thanks
You would need to take a copy of your site and database. Export the database via Phpmyadmin, create a new database and then import it https://www.ecommercetemplates.com/tutorials/php-backup.html
Copy all your files to the /dev/ folder and change the connection details in /dev/vsadmin/db_conn_open.php so it points to the new dev database you created.