I offered this in a different post a few days ago as a potential remedy for drawing dashed lines.
Another way to achieve dashed lines is to
- draw the entity in solid line in the .skp file,
- draw perpendicular lines that intersect the previously drawn entity
- erase between the perpendicular lines to create the dashed effect. (also remove the perpendiculars as well)
I use this method to portray doorswings for example in SketchUp models. The technique translates very well in Layout for condocs also. You merely place the dashed doorswing on a specific layer that is turned on or off depending on the visibility desired.