[Therion] how to do multilevel scrap

Hello everyone, I am trying to do a multilevel map in Therion and for some reason i can't figure out how to get dashed wall lines to appear. Attached is a screenshot of my area in question. There is a plumb shot from a60 to a67, and that's where the confusion starts. a67+ should all be below, and even though this data is in therion, it does not seem to understand that. Is there a directive I should be using to accomplish this? Thanks in advance!!!! Will -- Will Urbanski