1. Edit and save the original DOCX.
  2. Upload it to DOCXWebsite again and reapply the desired settings.
  3. Download a fresh Website ZIP.
  4. Deploy that ZIP to the existing Netlify site rather than creating a new site.
  5. Open the website online once so the newest offline files can be cached.

A fresh export receives a new cache identifier and instructs Netlify not to retain an obsolete index or service worker.