When a Visio drawing is Saved As DXF or DWG pin reference texts can sometimes appear upside down. Unfortunately this is due to a problem in the Visio Save As DXF/DWG option which affects Visio 5, 2000, 2002 and 2003.
It is possible that a fix for this problem will be included in the soon to be released Visio 2007. If not, we will endeavour to add some extra logic into the HarnWare DXF pre-processor.