After restoring a Virtual Server Backup at a server different from the backup source server some of the ServerAliases where not created in the parents server vhost configuration. Only a nearly empty vhost conf was created which did not exist at the backup source server:
Both servers are running Virtualmin 3.77 Pro. I can give you the backup files if needed.
After recreating the Alias Server the ServerAlias is set correctly in the parent vhost. The 2 liner vhost as described above still exists.