I support an application that merges through MS Word (hundreds of
users). This is the first time I've seen this problem. It's at a user
site across the country so I'm only able to talk the user through
trying things over the phone.

There are word documents on their network server (Server 2003). When
the data source is changed, there are no error messages and it says the
data source is what was just changed to. When the merge is performed
however, the original data source is used. If we change the data
source, then save the document. The next time the document is opened,
the old data source is still there.

If the word documents are copied to the C: drive on the work station,
then things seem to work normally. It seems to be specifically related
to their network.

I'd greatly appreciate any ideas on how to fix this.