That's how I learned to do it in the styles guide from Smashwords.
I highlight each chapter, select "insert bookmark" then on the TOC I highlight the Chapter 1, for the link I select the chapter from the bookmark list.
It's always worked fine. And it is working fine in D2D except that it is putting Chapter 9 first in the list of chapters on the TOC when it meatgrinds it. Otherwise, it's fine, just moving Chapter 9 to the top of the TOC it generates. It's going to look so stupid if someone does the preview.
Is there another way to do it? I'm probably not up for the learning curve on anything too technical right now, emotional reserves are about as low as they get for me.