Is this something that needs to happen within a greater context, or is this something that can be simply done with 
# untested substitution
perl -pi -e 's/^.+idTag.+$/new data here/' file.txt

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Ivan Heffner
Sr. Software Engineer, DAS Lead
WhitePages.com, Inc.

In reply to Re: inline file modification by Codon
in thread inline file modification by Woodchuck

Title:
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