How to export cad step / iges

Are you trying to export the CAD model?  PC-DMIS does not have that function.  Why would you need that since you've already had the model to import?

There's a secret trick to export CAD within a PRG routine to an IGES. 
Click File>Export>Part Model> then click any of the options (AS3, STL,etc). 

Then, a browser window will appear. 

In bottom right, change the file format to IGES. select your folder location, name it and click export.

Boom.

I've needed it because my organization doesn't have effective configuration management for our customer's cad data.

I have those same options as well, no option for IGES.

I do see File > Export > IGES though. Does this do the same function?

Strange, I'm using 2018R2.
--Maybe Hexagon caught on and nixed it on newer rev's?  "Undocumented enhancement"
--Maybe it's part of license permissions? IDK

I just so happen to have 2018 R2 installed and I checked there, it does have this option in the drop down menu. So it does seem to be version dependent.

(regarding the question, "I do see File > Export > IGES though. Does this do the same function?")

If it's not embedded in that "Part Model" submenu, the export will be the measured data, and not the CAD model.

Thanks Louis.

Guess we all know what to install if we need to pull a cad model out.

Its not a secret trick, nor is it a bug, and also not version dependent.  There is a license setting which controls this option.  I cannot explain why LouisD has it set.  I would still like to hear more about why there is a need to export a CAD model which was previously imported.