Issue with PHP Version Synchronization on Mirror Server

Hello, I'm facing an issue.

Here is the configuration of my servers:

1. Primary server managing ISPConfig and web files
2. Mail server
3. Two DNS servers, each with HAProxy
4. Database server
5. Mirror server of the primary server

Server 1 uses rsync to synchronize web files to server 5.

My issue is with the last server, but everything else works well overall.

The problem is as follows:

When I make a modification to the PHP version of the websites from the ISPConfig panel, the Vhost configuration files do not update on server 5 (mirror). Creating a site works correctly and creates the Vhost as expected, but when I modify the PHP version of the site, it does not apply on the mirror server.

Do you have any idea how to resolve this issue?