Software library in heirarchy

I have 1 share that I am using for the software library at my parent server.  The child servers do not appear to be getting any packages I add to the library.  They get the pacakge and all but not the files so they don't replicate down to the package servers.  Do I need to point the child NS to the library in the configration as well, or is there another setting.  Just wondering if I have a possible issue, or just a configuration issue on my part.