I got your file. Indeed it was as I suggested. Your style had Dashes turned off.
Tick the box and update the style and the dashes will show in the model.
In LayOut, reset the Style properties to match the style in the SketchUp file.
Side notes:
I did my usual checks in SketchUp and LayOut. I see incorrect tag usage in your model. All edges and faces should be created and remain untagged.
In LayOut you could purge the file of unused references.
I also see that you have overridden the camera properties for some of the scenes. This is risky because it can create a mess if the Camera gets reset for the viewport. Example here.
After resetting you can see how the content added in LO no longer aligns with the model.
Here I’ve made a copy of the viewport and set it up without modifying the camera properties. It would be much more stable and dependable.
