Section Break Changing to a Page Break During Runtime

I'll try this again. I have a macro that creates a book compiled of chapters. Each chapter is a stand alone Word document and each is inserted via VBA code (I forget the syntax right now but I can look it up if that is important). Anyway, each chapter has a Section Break so that headers/footers can be reset/new. I've discovered that during run time, the Section Break switches to a Page Break which screws everything up header/footer wise. It apparently reverts to a Section Break when the macro completes. Anyone run across this before?