Note to others - This thread originally appeared in the Captivate forums. It was quickly noticed by a moderator and moved to the RoboHelp forums where it belonged.
Hi there and welcome to our community
I think you may be a bit confused. While in a Word document the TOC is part of the document, things are vastly different in the world of HTML. In the world of HTML you have a totally separate file that stores the TOC. What you have are simply pointers to different HTML pages in the project.
When importing, you have an option to break topics apart. The function is called "Pagination". During the process of Importing you must work your way through some dialogs to get at this option.
File > Import > Word document
Choose the document and click Open
Click Next, then Edit on the Word conversion settings
Expand the tree on the left side, choose the desired break point and enable Pagination
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Marvelous! This worked very well.