Forum Discussion
Update Word template programmatically
It is possible to manually apply a new Word template via the following steps: Open the Word document you would like to apply the template to, then click File > Options to open the Word Options...
To reformat an existing document using a template, what you can do is create a new document based on your (new or modified) template and then import existing content, for example via the Insert File dialog box. This can be done via VBA, although I am not the right person to suggest the details for implementing it.
P.S. I just realized that this is an old thread, so any updates may not reach the original poster.