Hi there.
Try to use the Underlay tool. At the properties pallete, you will find it. Just set the base level equal to the level where the doors are set.

If that doesn`t work, change the View Range, seting the top and cut plane to cut the door.

Then, select the command LW, to use the Linework tool. Select the overhead line style, select all the lines of the door and then return the top and cut plane to the normal height.
If your problem has been solved, please click on Accept as Solution. Then others users can take benefit of it.
Regards,
Felipe Góes
Autodesk Instructor