If you use PEDIT to edit a polyline that has an associative hatched region, then on completion of the PEDIT that associative link has been broken. For instance, if you use PEDIT, EDIT VERTICES, SELECT, INSERT, EXIT, EXIT then the associative link has bee lost and you need to delete and recreate the hatched region.
progeCAD support, tips and troubleshooting forum. progeCAD works very similar to some versions of AutoCAD. Moderated.