I'm trying to create a Word directory from a list of addresses/data I have in
Excel.  I follow the usual Mail Merge process through Word, and everything
seems to merge properly - except for 4 columns in the middle of my data file.


The data all looks fine in the Excel file, and there's nothing unusual about
them - in fact, they're identical (in terms of formatting/data type) to the 4
columns prior to them.  But when I get to the "choose mail merge recipients"
window in Word (where you can select/sort/refresh/validate the recipients),
it's like those 4 columns have been overwritten - in place of each cell's
original data, there's a "0". And only in those cells where there was data
originally; blank cells stay blank.

What's happening here, and how do I fix it?