SewerCAD for AutoCAD maintains a one to one relationship between the AutoCAD drawing (.dwg) and the SewerCAD model file. When using ProjectWise with this data, we recommend that you create a Set in the ProjectWise Explorer. Included in this set should be the AutoCAD drawing (example.dwg), the SewerCAD database (example.stsw.mdb), the SewerCAD model file (example.stsw), and optionally for stand-alone, the stand-alone drawing setting file (example.stsw.dwh).

If you use the Set and the ProjectWise Explorer for all of your check-in / check-out procedures, you will maintain the integrity of this relationship. We recommended that you do not use the default ProjectWise integration in AutoCAD, as this will only work with the .dwg file.