Thanks.  I've tried to refile but it wouldn't let me refile outside of the original file.  Your answer confirmed it and, digging deeper, I found that I needed to modify org-refile-targets.

On Sat, Mar 5, 2011 at 20:49, Samuel Wales <samologist@gmail.com> wrote:
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AIDS 2.0: The Kafka Pandemic
 http://thekafkapandemic.blogspot.com/2010/12/welcome-to-kafka-pandemic-two-forces_9182.html
I support the Whittemore-Peterson Institute (WPI)
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I want to see the original (pre-hold) Lo et al. 2010 NIH/FDA/Harvard MLV paper.