I need to do some simple mods to dxf files of sheet metal parts. I wish to use a custom line in place of a bend line, such that the laser will cut a stop-start perforation. I bend the thin sheet by hand on these perf cuts. I can create a custom line to my spec and add it to the drawing. However, if i save as dxf and then try to reopen the file to make sure it is correct I see the perforation cut line as a solid line. If I see a solid line the laser will cut continuously. No good. If I save as the dft file format and reopen it shows the perf line as intended. How do I get my dxf or dwg file to show the same dashed line (which will be my perforation cut)?