Heading topic not added to auto-generated TOC

Using RoboHelp HTML 11.

I'm linking a Word document into my project, and having it create the Table of Contents automatically. I have it create new pages at Word's Heading 1 and Heading 2.

Typically, a section in Word will be like this:

Heading 1

Body

Heading 1.1

Body

Heading 1.2

Body

In the TOC, it will create a book labeled "Heading 1", and pages for Heading 1.1 and Heading 1.2. There's no page for Heading 1 or the body text that goes there.

I can manually add the Heading 1 page to the book, but I suspect that I don't need to. Is there some setting that I'm using wrong? Or a trick or workaround?

Thanks.

-- Shawn