Login into your reseller account

click the custer>>add customer.

Then Login into End customer Domain Control panel

Using Jump to the domain for which one you want to move it.

click the Move service.

Here, it will ask the Client registered mail id and the client id.

Enter the details which one you create in the reseller account.

Then it will move form your end customer to your reseller account.

Using Move service you can move the domain from your old account to your reseller account.