You will be able to restore the policy, however the rest of the configuration that is appliance specific (anything under the configuration tab) is tied to the UUID of the hardware from where the backup was taken. Therefore, you'll generally need to manually configure IP, hostname, dns, static routes, central management settings, etc. Do you have extensive customizations to the sections under the configuration tab that would be too much of a hassle to manually reconfigure?
first of all, thanks for the answer.
no, i don't have so much manual configurations under the configuration tab on the old box. That's not the problem.
I only want to make shure, that the backup / restore of our (complex) policy is compatible between the two versions.