"Let's assume you have a VM called examplevm that you want to reuse on this host. On the old host, you should have a directory Machines/examplevm in the VirtualBox directory; Machines/examplevm should contain the examplevm.xml file. Copy the examplevm directory (including the examplevm.xml file) to your new Machines directory (if your user name is admin, this is /home/admin/.VirtualBox/Machines - the result should be /home/admin/.VirtualBox/Machines/examplevm/examplevm.xml).
"In addition to that copy the examplevm.vdi file from the old VDI directory to the new one (e.g. /home/admin/.VirtualBox/VDI/examplevm.vdi).
Afterwards, you must register the imported VM:
