Removing items from unpublish queue

Hi

Rhythmyx 6.7 [CMS-473]
Error: Cannot unpublish item 18-101-1890 for delivery type database which requires unpublishing information.

I have an edition which publishes out database content. If this item is set to “Unpublish then publish” there are items the edition try to unpublish which are now longer in the DB. Is there an easy way to remove these items from the unpublish queue so errors don’t appear in the publishing logs?

Cheers
James

I would also like to know if this is possible. I had to switch a bunch of editions to get around this.