Setting feeds to ignore updated items

I noticed the other night that setting a feed to ignore updated items was not remembered when I reloaded the page. However, there's an easy workaround:

1. Edit the Feed
2. Change Updated Items setting to "Ignore"
3. Click Update button
4. Edit the Feed
5. Change Updated Items setting to "Display as New"
6. Click Update button
   

It appears that the messages are being interpreted incorrectly by the server. So the first update, the server thinks you're setting it to Display as New, and the second update, it actually sets the feed to Ignore.