Disappearing Xen Config Files

An interesting "feature" of Xen 3.0 is that when you issue:

virsh undefine domain

it executes:

rm -rf /etc/xen/*domain*

This means you can't keep revisions of the config file in the directory.

BTW: Yes, I know 3.0 an old version, but I'm still running FC6 on my infrastructure hardware. Why? Because if it ain't broke... don't fix it. My Fedora 7 Virtualization server has 3.1, which seems to be current as of this writing. Again, no reason to go to Fedoras 9, if its running 3.1, also.