Problem when switching isometric views

[thm]

Hi, 

I am using Autocad since ca 20 Years - more than 10 years in 3D. Now I have a problem, which is disturbing the work and I find no remedy.

I am using mostly the standard isometric settings (SW,  SE, NE etc), mostly starting the work in SW.

Now when I look at some items already arranged in SW mode earlier and add new items and check the drawing e.g. in SE Mode, the new Items are on completely different places. 

I found no way to correct his behaviour and it makes work very difficult. I attached a small .dwg which   

demonstrates the trouble.

Every help would be greatly appreciated.

Best Regards

Thomas Maurer

I am working with Autocad 2012.2  Version R.47.M.170

[pendean]

I moved UCSICON to "origin" for consistency in what I am about to show you in your file.

This is the FRONT view, your 3d content is circled

This is the TOP view, your 3d content is circled

This is the RIGHT view, your 3d content is circled

TLDR: your outline-only shapes are at Z=0, nothing else is. this is an illusion that they are side by side