The action to register or unregister child servers does not generate the same result as to enable or disable child servers. Unregistering a child server permanently cuts the parent and child server connection. Disabling a child server temporarily suspends the connection and maintains the heartbeat connection between the parent and child servers.
For example, if you registered child server XYZ to parent server A. Then unregistered XYZ from parent server A and registered it to parent server B. Parent server B manages XYZ. A's Product Directory tree removes XYZ from the list.
Use the Parent Control Manager Settings screen to register or unregister from a Control Manager parent server.