My company uses Windows 2000 and we just upgraded to Office 2003 Professional
from Office 2000. The problem is this:

When users create and save a mail merge, then create another mail merge
using the same Excel data source file (revised), the info in the mail merge
fields for the previously saved mail merge changes to whatever the revised
data source info is. Therefore, it is useless to save the previous document.

This didn't seem to be an issue in Office 2000. Any advice would be greatly
appreciated.