If the operating system of a workstation is uninstalled, then the agent details will also be removed. And, a new Agent ID will be created when the agent is installed on the new operating system. The Agent ID of the machine, when scanned, will differ from the one that is already available in the application database. Though the Agent ID differs, the Service Tag of the machine remains the same. Therefore, based on the Service Tag, the workstation will be overwritten, updating the old Agent ID with the new one.