I gave it a whirl since I use SW2015 Pro and MoI. I had no issues exporting from SW in STEP 203 format and having the part names travel along. I see the same kind of results Danny shows. As for SW STEP Export options, there are not a lot of them. The difference between 204 and 204 is that 204 loads styles, 203 does not.
Thank you for your offer, and for your prior post as well!
I'll have to ask the client whether they will be okay with me posting any of their work. But I'll let you know.
If you prefer, you can always email it to me and I will keep it confidential. I work with confidential client files all day every day so know the importance of that.