unbury on open/close and make sure we set usn when unburying

anki/collection.py

@@ -58,7 +58,9 @@ class _Collection(object):
             self.crt = int(time.mktime(d.timetuple()))
         self.sched = Scheduler(self)
         if not self.conf.get("newBury", False):
+            mod = self.db.mod
             self.sched.unburyCards()
+            self.db.mod = mod
 
     def name(self):
         n = os.path.splitext(os.path.basename(self.path))[0]
@@ -131,6 +133,10 @@ crt=?, mod=?, scm=?, dty=?, usn=?, ls=?, conf=?""",
     def close(self, save=True):
         "Disconnect from DB."
         if self.db:
+            if not self.conf.get("newBury", False):
+                mod = self.db.mod
+                self.sched.unburyCards()
+                self.db.mod = mod
             if save:
                 self.save()
             else:

anki/sched.py

@@ -135,9 +135,9 @@ order by due""" % self._deckLimit(),
     def unburyCards(self):
         "Unbury cards."
         self.col.conf['lastUnburied'] = self.today
-        self.col.setMod()
         self.col.db.execute(
-            "update cards set queue = type where queue = -2")
+            "update cards set mod=?,usn=?,queue=type where queue = -2",
+            intTime(), self.col.usn())
 
     # Rev/lrn/time daily stats
     ##########################################################################