Problem: When adding a shapefile created from Pathfinder Office to ArcMap, there is no spatial reference information
When using a shapefile exported from Pathfinder Office, there is no spatial reference information associated with the file, even if a projection was defined in Pathfinder Office.
Pathfinder office does not associate a .prj file to the shapefile upon export.
Solution or Workaround
Define the projection of the shapefile in ArcMap to match the projection of the data in Pathfinder Office.