Missing floors in DWG-export

[Kamelite]

When I export a Three-story building to DWG, it appears that only the 1. floor is saved, it somehow leaves out the basement and the second floor. (That is when I open the DWG in AC, I have no way of telling how it actually looks in Autocad. I suppose there is a reason for this.

Any suggestions?

.Kamelite

[Laszlo Nagy]

You have to save or Publish each Story as DWG separately. The resulting DWG files will be 2D files, not a 3D model.
It may be a good idea to set up a Publishing Set if you need to save these DWGs multiple times in the future.