If I download from the radio using parameters:
Port COM3
Vendor Wouxun
Model KG-UV6D

everything works great.

I have prepared a .CSV file formatted to the CHIRP requirements.
 
I can successfully import the file.  

When I try to upload that file data to my Wouxun KG-UV6X, this window appears:
Port COM3
Vendor Wouxun
Model CSV (note - this value is greyed out and not changeable)

I click on OK and nothing happens.