Enterprise Administration > Windchill Data Loading > Loading Legacy Data Using the LoadFromFile and LoadFileSet Utilities > About the Load Files > Load File Set > containerPath
  
containerPath
It is recommended that the set of objects to be loaded in a load set should all reside in a single container. However, you can specify an alternative containerPath that will cause the object in the current loadFile specification to go into a different container than the other LoadFile pointers in the set. You should set this element only in extraordinary circumstances.