Thank you for posting your problem in Newsgroup. Could you try to set different publish area on different snapshot? If there is one snapshot doesn't contains model, please edit the Publish area and make it small. When publish to word, it will publish the Publish area by default for each snapshot. See my attached image. Hope this workaround can solve your problem.
Peggy Wang Sr. Software QA Engineer Publisher Quality Assurance Team Autodesk, Inc.