[Mailman-Users] One list repeatedly sends moderator requests for old already moderated messages

[Fletcher Cocquyt]

Hi,
We have one list where the moderator daily receives moderation requests for
the same 4 messages from 3 months ago.  They have already been moderated
(discarded) months ago.

Is this a known issue? Is there a solution?
(mailman v 2.1.9)

thanks!