Transfer Domain on the Same Server to Different Account

Hi, I have a small setup and I provide web development services to my clients. I have different accounts on different hosting providers like [removed] Sometimes it happens that I need to move my sites from one account to another account on the same hosting provider. Like if I have a WordPress hosting package at [removed] (for example) then I purchase a new account to increase the resources limit. How can I move my complete C-Panel account from one account to another account? Is there any way? That can transfer my files, emails and FTP accounts? And is this possible between different hosts? Like if I wanted to move my C-Panel account from [removed] to [removed] account... is this possible to move complete c-panel account or do I need to do all the work manually?