If you toggle the fields to show the construction, you can use the replace
function.
See also http://www.gmayor.com/batch_replace.htm

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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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> I want to search a series of Word documents for a specific mail merge
> field and replace it for another field
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>
> plz help