Autoblog feed error

Hey Guys,

I've started a new thread for this because I just don't know where we're at. Feeds disappear when they get updated. Here's what happens:

Go to edit feeds -> add new -> set up the feed details -> save
then go to edit feed -> edit -> update the url to a new one -> save
the feed has now disappeared.

Latest WP install.
Single site install.
Latest Autoblog version.

Is there a fix for this?

Thanks...