Cannot amend attached DXF with Draftsight. I can with AutoCAD but Draftsight won't let me. I am a new user of Draftsight so it may be something small I am missing. I mainly use Solidworks but because the attached DXF is too large for Solidworks to handle, I have purchased Draftsight to trim it down to the most important components before opening in Solidworks. Any help would be great.