You're reading one line at a time.

Update: here's a fix that reads in paragraph mode. I think this is what you want. 

$/='';
while (<DATA>) {
  print "$1\n" if /(\d)\n\n/;
}

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Caution: Contents may have been coded under pressure.

In reply to Re: Multiple newline regex by Roy Johnson
in thread Multiple newline regex by rhythmicus

Title:
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and:  <code> code here </code>
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