Preserve Server-Level Customizations During Upgrade

NetBrain currently does not retain manually applied server-side customizations, such as Front Server configuration adjustments or worker server memory settings, when the system is upgraded. As a result, administrators must rediscover and reapply these changes after every upgrade, and the details of prior adjustments are often not documented anywhere in the system. This enhancement proposes a mechanism to capture, preserve, and automatically reapply approved server-level customizations across upgrade cycles, or at minimum to surface a record of prior changes so they can be reapplied efficiently. Retaining these settings would reduce repeated troubleshooting effort and prevent recurring downtime for customers who rely on tuned server configurations for expected system performance.