In my current project, we make use of numerous different Word templates, but the basic for them all is they have a header and footer and they are the same. Header and footer containing quick-party showing SharePoint metadata, for e.g. status of the document. Of cause the values must be updated if the user changes them either from Word (document information panel) or from the SharePoint UI. We made a lot of templates, from meeting minutes to a letter template and all the values from the quick-party fields updated fine but our most simple Word template that only contain, header and footer, did not work. After a very long search we came to the Word template must include a text and a space is enough.