Air Terminal Hidden Lines not Exporting

[tjl326]

This is a bizarre issue that I have never encountered before. No matter what discipline I set, how I change the visibility/graphics, etc., air terminal hidden lines under duct will not export. I have tried exporting to PDF and DWG with various settings and nothing seems to work. Below is an example of what I am talking about with a screenshot taken in Revit (left) and a screenshot taken after exporting to PDF (right). Anyone have any ideas?

                        

P.S. This only happens when exporting using vector processing. Raster processing shows the hidden lines fine, however, raster processing results in a large file and the drawing is blurred in many areas.

[iainsavage]

Not sure why you posted this twice.

Duplicate post with slightly different title here.

[tjl326]

It was a mistake. 

[craigjonnson]

Do you have 2 views overlaid on your sheets to show the RCP and the Floor plan combined?

If you do, remove them and place the RCP plan first, with the Floor plan over the top. Ive seen this issue, where the RCP plan had been placed over the floor plan. 

[tjl326]

No, I do not. Sorry I should've included this in my post

[RobDraw]

Do they export if you turn off the ceiling?

[tjl326]

No, they do not. It's so bizarre