Why horizontal girt/battens generated extra at mid wall

[GeneDavis]

Doing a garage/barn with a bay at one end and having issues with two things.  

 

Walls specified as "inside battens and planking" generate a set of girts on inside surface where wanted, but a copy of those girts is inserted at center of main layer, inside the 2x6 framing.  Easy way to see is to look around at the 3D framing overview.

 

Also, I have a ceiling surface I want to eliminate.  The lounge room and sauna rooms both have a surface above the ceiling framing I would like to lose.

 

File attached.

Barn garage one floor only.plan