I still can't make that fit... Search e.g. for the song "21st Century Christmas" on polyhex (use Start Of Field option). It entered on 23/12/2006, and has the run 2-7-43, ie no nonmovage there. And Chart Stats agrees that these were the placings on 23/12/2006, 30/12/2006 and 06/01/2007 respectively. It could of course be that these both use the same non-official data for the interim week...?