Oops, a unique_together of the first two fields is wrong, since

there are two ADs per area, and of the three fields doesn't add
anything real, so just don't try to make it unique.
 - Legacy-Id: 207

ietf/proceedings/models.py

@@ -173,7 +173,6 @@ class IESGHistory(models.Model):
         return "%s (%s)" % (self.person,self.area)
     class Meta:
         db_table = 'iesg_history'
-	unique_together = (('meeting', 'area'), )
     class Admin:
         pass