diff -ur trac/trac/ticket/admin.py trac/trac/ticket/admin.py
--- trac/trac/ticket/admin.py        2009-09-17 13:13:44.000000000 -0500
+++ trac/trac/ticket/admin.py   2009-09-21 08:23:43.000000000 -0500
@@ -336,7 +336,7 @@
                         except ValueError:
                             invalid_ticket_tokens.append(id_token)
                     iteration_tickets = " ".join(ticket_tokens)
-                    current_iteration.tickets = iteration_tickets
+                    current_iteration.tickets = ticket_tokens
                     current_iteration.update()
                     req.redirect(req.href.admin(cat, page))
                 elif req.args.get('cancel'):