+1  A: 

Word checks whether the attached template of a document has been modified and prompts whether to save the changes. To avoid such a prompt you could set the Saved property of the attached templated to true.

In VBA this would be:

ActiveDocument.AttachedTemplate.Saved = True
0xA3
A: 

Thanks divo.

Here are the 2 lines in C# for VSTO:

Word.Template template = (Word.Template)this.Application.ActiveDocument.get_AttachedTemplate();
template.Saved = true;
Mike Regan
A: 

This issue has been driving me nuts for days. Good info.

Thanks.

Steve O.