Orpaned ant tasks after ant is killed

I'm running some ant tasks that do an rsync. Its running win2k with
cygwin's rsync and ssh. When I view the process tree while ant is
running in idea I see

idea
- java(ant)
- rsync

If I kill ant (via the stop button in idea) the tree becomes:

idea
rsync

ie, the rsync process is moved to a top-level process and continues on
its merry way.

Does anybody know if this an idea thing or an ant thing?

--
Barry Kaplan
bkaplan@integratedtrading.com