That's a shortcut, you probably should use UI to modify profile
I don't see "silent modification"
described online actually, maybe it's not officially supported
You can do serversetup -playback or remoteserversetup -playback using
GUI and modify your profile prior to using it.
More information about those are in help9_admin.nsf, - but in short
- you use setup GUI to modify your existing setup profile (.pds).
I think, however, the original question
had something to do with modifying setup on the fly.
Irina.