It is also crucial to distinguish between logical sections in a document and Word sections, which are a totally different animal.
Sections / Headers and Footers in Microsoft Word 2007-2010 (same as previous link except adapted to the Ribbon interface)
"inserted next page" Are we talking an inserted "next page" section break?
The TOC should be automatically generated, not something that you need to copy across.
How to create a table of contents in Microsoft Word