As long as you deactivate, you can move a license to a new computer as many times as you want. You can start the license manager from /Library/Application Support/CoreMelt/Tools. Run the program "VTwin Ignition" then select the product and press "deactivate" to move your license.
If you have already removed the software or wiped your hard drive you can still Deactivate by downloading our license manager seperately: download it here.
Watch the video if you need more details.