You can easily move a domain under your management from an existing Cosmotown account, to a different Cosmotown account. Please see below instructions:
Log in to your account
Check the box next to the domain you wish to move
Click the Manage Domains drop down menu
Click on Internal AC Transfer
Enter the email address associated with the Cosmotown account you wish to move the domain to
An approval email will be sent to the specified address
After approval, the domain will automatically appear in the other account.