deli.icio.us Classes are deleted when posted

I have noticed that the del.icio.us classes are deleted when del.icio.us makes its daily posting to my blog. The post from del.icio.us used to include delicious-link, delicious-extended and delicious-tags. Is this something that is being stripped by WP or something del.icio.us has changed in the last week?

bad post: http://www.jgmitchell.com/words/2005/12/06/links-for-2005-12-07/

last good post: http://www.jgmitchell.com/words/2005/11/30/links-for-2005-12-01/

I am using RC1.