We've redesigned standard VirtueMart order management system to be able to add new features and we proudly announce AJAX order data updates with our component. You can edit any type of user data including his email address, country, state and much more. You will find this managmenet in Components -> One Page Checkout -> Orders, and click on a particular Order
Full Order management page looks like this
This feature is in Beta. Please let us know what you think and tell us of any bugs you notice on this page.