You can create a clone of a system by going into the Dental System Control Panel of the original machine, then navigating to 'Tools>Import/Export'. In the dropdown menu, choose 'Clone system'. This will create a .ZIP file of the system. The cloned system will be the exact same version as the original (So, if you are running 2.9.9.4, your clone will be 2.9.9.4, it will not work with any other version). It will also preserve the installation type (Client/Server or Standalone).
On the new machine, your 3shape distributor will run the installer file for the same exact version, choose 'Custom installation', then choose 'Clone system' in the dropdown menu, select the previously created .ZIP file and run the installer as usual.