Thanks guys, ..
All wall types shown in my previous attached pic are drywall 'A', ..
All wall types have Inside and Outside Visible (for this drywall) as OFF,
.. but this has always been that way so there is no line of drywall on the 2D floor plans
There is nothing else touching the 2x6 wall in question as what you see is what is there, .. just the wall segments to create the image I've attached
I'm still puzzled, .. older models still show interior drywall on this wall type, .. it's just the last few days any new model has this flaw on that wall.
My extraction options are as they have always been also, ..
I'll keep trying to figure this one out, ..