diff -r 3a6ddacb7198 -r a464deecc9dd mercurial/phases.py
--- a/mercurial/phases.py	Thu Dec 20 15:32:42 2012 +0100
+++ b/mercurial/phases.py	Thu Dec 20 17:14:07 2012 +0100
@@ -249,6 +249,7 @@
             if targetphase != 0:
                 self.retractboundary(repo, targetphase, delroots)
         obsolete.clearobscaches(repo)
+        repo.filteredrevcache.clear()
 
     def retractboundary(self, repo, targetphase, nodes):
         # Be careful to preserve shallow-copied values: do not update
@@ -267,6 +268,7 @@
             currentroots.intersection_update(ctx.node() for ctx in ctxs)
             self._updateroots(targetphase, currentroots)
         obsolete.clearobscaches(repo)
+        repo.filteredrevcache.clear()
 
 def advanceboundary(repo, targetphase, nodes):
     """Add nodes to a phase changing other nodes phases if necessary.