Unfortunately at the moment we do not provide that functionality. There is such feature request on our Feedback portal - http://feedback.telerik.com/Project/8/Feedback/Details/38575-move-feedback-items-between-projects. It will be very helpful for us if you give your vote up for that request so we move it faster in development.
If you have further questions or issues, please don't hesitate to contact us.
the Telerik team