ePO would use a value called the AgentGUID to uniquely identify a system in the ePO system tree. As long as this GUID value is not changed (for e.g. by forceinstalling the agent or reinstalling the OS), the system tree is updated with the new name during next Agent Server Communication. The AgentGUID is stored under this Registry Key: HKLM\Software\Network Associates\ePolicy Orchestrator\Agent\AgentGUID
Thank you so much for the information.
This is what I needed to verify and was very helpful!!!
Glad to be of help