Comment by WillAdams

For my part, my approach was to set up a Word .docx file with styles, which would import into Adobe InDesign, mapping style-to-style, and if need be, pre-process w/ one or more AppleScripts and page as normal, then when it was time to return the edited manuscript to the author(s), select all the text and remove over-rides and export the text as a .rtf from InDesign, open that in Microsoft Word and re-save as a .docx.