Moving the Titan server to another computer involves cancelling it on the old computer first and then re-installing it on the new computer. The re-installation involves obtaining a new registration ID from your vendor.
Note that this procedure only needs to be done on the computer that has the Titan server installed. You do not need to do anything on the workstations that have SPACE GASS installed.
Cancel the Titan licence on the old computer via the procedure at "Cancelling the Titan Licence".
Install the Titan server on the new computer using the "Installing the Titan server" procedure at "Floating Network Licence".