.docx --> epub - Heading styles not translating to

Help! I'm converting a docx file to epub. Usually I specify

• Level 1 ToC (Xpath expression): //h:h1
• Level 2 ToC (Xpath expression): //h:div[@id]

and it works great. Suddenly it's not doing that - <h1> and <h2> are no longer marking chapter headings and subheadings. Lulu requires all chapters and subheadings to be in <h2> <h3> format. Did anything change recently?

Source file: http://friedmanarchives.com/~downloa..._for_epub.docx

Output file: http://friedmanarchives.com/~downloa...III_v1.05.epub

Thanks! GF