A few questions about Virtualmin restore

[Canapin]

SYSTEM INFORMATION
OS type and version	Ubuntu 22.04
Webmin version	2.105
Virtualmin version	7.9.0

I’m trying the backup and restore features of Virtualmin.

Seems to work OK so far but I experience two issues:

• When restoring a sub-server sharing a SSL certificate with the parent server/domain:

  Applying Nginx configuration ..
  .. configuration is invalid : nginx: [emerg] cannot load certificate 
  "/etc/ssl/virtualmin/1706282534110415/ssl.combined": BIO_new_file() failed (SSL: 
  error:80000002:system library::No such file or directory:calling 
  fopen(/etc/ssl/virtualmin/1706282534110415/ssl.combined, r) error:10000080:BIO 
  routines::no such file) nginx: configuration file /etc/nginx/nginx.conf test failed
  

  It doesn’t happen otherwise, which will make me use a separate certificate in order to prevent this. Is that a bug?

• The Additional Nginx directives for new virtual hosts setting don’t seem to be kept in the Virtualmin configuration backup, or at least it’s not restored.
  This setting is found in in System settings → Features and plugins → Nginx website → Configure
  Is that a missing feature? Are there other missing things one should be aware of when restoring a server?