Where are the plists MCX uses stored on the server?

I have had great luck using package manifests and creating my own plists for use with MCX. I have an issue though. I have many groups (mostly for reasons I have no control over so cleaning house is not an option I'm afraid). When I create a new plist I need to duplicate it manually for each computer group. This can be tedious with an extensive plists like Safari's. Is there a way to duplicate a plist across machine groups -or- where are the plists are stored so I can copy the desired file to the other groups more easily? thanks.