I am converting a large document from an older version of Word.  When I
insert a section break which is to start on a new page, the page number goes
up two digits instead of one.  For instance, I insert a section break on page
121.  The page after the section break should be page #122, but instead it
becomes #123.  But there is no extra page inserted.  I've tried deleting
every section break and re-inserting them, but the same thing happens: Word
adds an extra page number.

I also tried saving the document as a .docx, but that doesn't help, either.

This is a professional document, which will eventually be published.  I
really need help on this.

Thanks very much.