Prevent site of configuration from changing when a contact is changed

Is there a way to prevent a configuration's site (e.g. a firewall at site "A") from changing if the contact for that configuration is changed?  We have many clients that have multiple sites and most of the time the configurations (such as firewalls, switches, etc.) have one contact associated with them that is actually located at a different site.  While we can override the site manually, it doesn't prevent the site from getting overwritten if a contact is changed in the future (e.g. new IT manager, etc.)