Dxf hatches not importing

I seem to remember hatches importing without additional modification as saved from AutoCAD into DXF format. Now as I try to import these files, the hatched areas are blank. However if I convert the hatches to lines then save, Lightburn will import them fine. Is there something I am missing or is my memory incorrect in that this never was possible?

I have access to a laser in a community workshop / could there have been a setting in Lightburn that was changed?

Lightburn imports hatches from AutoCAD R12 and R13 ASCII DXF files. LB does not import hatches from ASCII DXF files starting with R14.