We have previously discussed the fact that a Next action (possible to do anytime now) is still possible (i.e. a Next action) even if I star it manually or if it is automatically starred because of a start date or a deadline date. It should still be visible on the Next list. http://help.doit.im/topics/1511

The same applies to Waiting For. If I am waiting for a monthly report from someone, and this report is due on the 7th of the following month, then this is still a Waiting For action - even if it shows up on the Today list. It should still be visible on the Waiting For list, and if I unstar it it should go back to the Waiting For list (not to the Next list, which is what happens now.)