Index: tool.py
===================================================================
--- tool.py	(revision 4380)
+++ tool.py	(revision 4381)
@@ -968,7 +968,8 @@
 
         # We update the profile version to the last one we have reached
         # with runnning an upgrade step.
-        self.setLastVersionForProfile(profile_id, step.dest)
+        if step.dest is not None and step.checker is None:
+            self.setLastVersionForProfile(profile_id, step.dest)
 
         url = self.absolute_url()
         request.RESPONSE.redirect("%s/manage_upgrades?saved=%s" % (url, profile_id))