Miramax just did a flip-flop. Now a rep says that there was a test screening of "Doubt" in Manhattan this week, conducted by producer Scott Rudin. Miramax says it did not know about it because the studio was not involved. OK, but why didn't one of Rudin's film reps know about the test screening either when I asked one of them about it earlier today? Gold Derby regrets communicating both false reports from official sources.