There is a Migration Tool posted in the Support - Downloads area specifically for this purpose. Here is more information:
We are pleased to announce the availability of a Configuration Migration Tool for the Cisco Email and Web Security Appliances. This tool enables migration of configurations from physical to virtual appliances, and from virtual appliances to physical appliances.
The tool is available in the Cisco Software Download Center under:
Login to the FXOS chassis manager.
Direct your browser to https://hostname/, and log-in using the user-name and password.
Go to Help > About and check the current version:
Check the current version availa...
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...