Transferring a primary cPanel domain as an addon domain in another account

Hello everyone, can we transfer cPanel domain, its files and database (a Wordpress installation) to another cPanel account and set it is an addon domain there? For e.g.: I want transfer xxx.com, which is the only and primary domain in a cPanel account to another cPanel account. In the new cPanel which has another primary domain, I want to set this xxx.com as an addon domain. Is there any help file or tutorial on this topic? Your help is greatly appreciated.