During the installation, ec-cube creates some cache files that contains server information along with other procedural data. So, transferring ec-cube whole package to another domain/address is not wise. How can you transfer your database? Every cPanel have their own prefix taht is added with the db name automatically. Only change the db name from exported sql file can not import properly later on. Considering all these things, this is wise to install ec-cube again and develop from the begining.