Engine Generated Combinations in sales_data table in Error

Hi,

We noticed that when the engine ran on 7/28/2013, it generated millions of new combinations that do not even have previous sales history and these items were not even existing in these locations, i.e., the items were not sold on these ship-to locations therefore they do not exists in sales_data table and these item/location combinations does not exist in mdp_matirx. Does anyone know what might have happened? Did anyone experience this before on their environment?

The territories where these items were created do not see these promo groups/items on their worksheet, so, it is not possible for the sales admin to erroneously update the do_fore flag to 'Do Forecast' for these items.