Thanks for the link.
What are named updates?
If you enable both options, clients try to retrieve updates from both sources. You typically do not enable both options unless you have a specific reason. If the server provides named update versions to clients, and the clients have previously downloaded the latest updates from a LiveUpdate server, the clients do not download and install the named (previous) versions.
Does that mean if we a client has previously talked to a liveupdate administrator server, if we turn that option off and select only to get updates from SEPM, then the client will no longer download updates?