X8-Importing CAD Blocks; Simpson Hanger problems, displays with lines

[PaulinColorado]

When I import DWG files from my engineer (using Revit) or from Simpson Hanger manufacture catalog as a CAD Block into my CAD details;  I get multiple lines, vert. Horz. in what appears to be both the holes in the hangers and fasteners.  How do I prevent this from happening?  When I delete the hanger from the CAD detail, all lines go away so I know it's part of that detail.  I cannot "explode" the CAD detail to isolate the Active Layer Display options...thanks.  Only tedious fix I've found is to delete all hangers and fasteners and redraw them with CAD, not a good option.

  

[Chopsaw]

Not exactly sure of your problem without seeing some screen shots but the CA 3D Library https://3dlibrary.chiefarchitect.com/index.php?r=site/library&reset=true has a extensive collection of simpson products under the CAD section, available for download that have all worked fine for me. I have also found some 3D .skp symbols online in the 3D Warehouse https://3dwarehouse.sketchup.com/index.html that work great. You might also find Bart there to.

There is a Edit Layout Lines Tool  that may work for your situation.