at the moment it is not possible to import UTM configuration inside XG Firewall. In the middle of next year a tool will be available to convert UTM config. to XG config.
Sorry but I do not speak German.
I really hope this tool becomes available much sooner (if possible) - please? I know many other over on this forum that actively use Sophos UTM and are testing XG Firewall who would also appreciate this. Thanks for consideration.