My first impression is to do the following on the Tech Preview prior to moving the VM to Fusion 13 retail

• Uninstall VMware Tools from the VM.
• Power off  (not suspend) the VM and remove all snapshots 
• Remove the TPM device from the VM.
• Decrypt the VM. 
• Downgrade the VM to hardware version 20
• Now you should be able to move the VM to Fusion 13.

once you move it, add the TPM device back to the VM config and re-encrypt. 
then reinstall tools in the VM provided with Fusiin 13. 

Down