Copying a virtual machine with installed Network Agent or creating one from a template with installed Network Agent is identical to the deployment of Network Agents by capturing and copying a hard drive image. So, in general case, when copying virtual machines, you need to perform the same actions as when deploying Network Agent by copying a disk image.
However, the two cases described below showcase Network Agent, which detects the copying automatically. Owing to the above reasons, you do not have to perform the sophisticated operations described under "Deployment by capturing and copying the hard drive of a device":
Analysis of changes in virtual hardware is not absolutely reliable. Before applying this method widely, you must test it on a small pool of virtual machines for the version of the hypervisor currently used in your organization.