I'm using Office 10 in XP3. I use a number of merge letters with header information and a data document to store the data for the merged letter. I save my main file normally after use. When I re-use the file, instead of using the header document, Word begins using the data document for use as the header form? It keeps doing it - must be a setting that I messed up - so I must manually re-insert the header document into my main document?