Additionally, i would like to add that Vendor A, a couple weeks ago, sent me a screen shot showing how his document looked within AutoCAD when he opened it. This was a direct DXF export from AI that i had sent him.

The curves were perfect, but the scaling was tremendously oversized.

So, this is when i signed up for AutoCAD in an effort to solve the scaling issues.

So, the fact that the curves translated to him from my direct AI DXF export, says to me that AI is doing it's job correctly exporting curves.