For Cognos Report loading, there are load file directories that are used for Windchill out-of-the-box reports. These directories should not be used for custom load files. The reserved directories are <WindchillHome>/loadFiles/cognosReports and <WindchillHome>/loadFiles/cognosReports/<assemblyId> where <assemblyId> is a standard Windchill assembly ID such as wnc, pdml, pjl, etc.