Courtyard question

[Walleye]

I'm trying to draw an interior courtyard and every time I connect the courtyard walls CA automatically generates an invisible wall between the courtyard and an exterior wall. It then won't let me delete it.  Does anyone know what is causing this? Or how I can prevent it? Attached is a simple box  with a box courtyard inside it. You'll notice the invisible wall.

courtyard.plan

[Alaskan_Son]

Unless you specify otherwise, Chief automatically connects "Island Rooms" using an invisible wall in order to provide for a more stable model (just something needed internally).  You can turn the invisible wall layer off, or simply place that wall on it's own layer and turn THAT layer off.

 

You can also optionally navigate to Edit>Default Settings>Walls>General Wall>Automatic Walls and Uncheck Connect Island Rooms but I wouldn't recommend that unless you plan to draw your own connecting wall.  You might be fine, but I think you may find that you end up with unexpected results.

[Walleye]

Thanks guys. I have put it on it's own layer and turned it off. Then it popped up again when I was doing the basement, so it just made me wonder why or how to prevent it. 

Thanks again