Okay I see. Well, sometimes we encounter clients who'd like to dictate their intended designs on us. Their decision of swapping the living and dining spaces was probably a matter of choosing a more comfortable experience since they're the ones who'll be using the apartment at the end of the day. Thus, this is one of the many challenges we face when dealing with different people.
As for the drawing and rendering programs. I'm glad you're well-versed with SketchUp, and most importantly, AutoCad since they provide a more precise technical foundation. If you've tried Revit, it would also make work easier. Thanks for your interesting feedback! 😊