Almost certainly you are using fieldnames that are too long and Word is only
seeing the first part of the fieldname which is the same in both instances.
can you change the datafile to alter the fieldnames?

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Graham Mayor - Word MVP
My web site www.gmayor.com
Word MVP web site http://word.mvps.org
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> in my document i have a Mail Merge field that shows as
> «Brk_name_street»
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> Anyone an idea??
> Thanx