Hi Adrian4321,
As @Graham_A rightly points out, the move & transfer process will take the email services from your old account and move them to the new account, giving you full control in the same way you had with the old account.
I'll need to confirm all the details with you and complete the data protection checks, so I'm sending you a PM to allow us to proceed. Just check the purple envelope, in the top right of the page to access your PMs.
Speak soon.