I refactored a standalone script in bingle I wrote a while back called bingleResolved and integrated it with bingle proper. bingleResolved will attempt to reconcile bugs marked as 'resolved' (or some configurable status) with Mingle. That is, if you have bug cards floating around in some backlog in Mingle but they get marked as resolved in Bugzilla, bingleResolved will put them where you ask it to (for instance, into the 'accepted' column of your current iteration). This should help keep Mingle instances tidier and Mingle bug backlogs better in sync with Bugzilla.
If you pull the latest Bingle (b1ff82f46e9d422d016335667556d2a4b23410d4) and want to use the resolved feature, make sure to update your bingle.ini (see changes in bingle.ini.example) and run bingle with -r.
Happy Friday!