Which column does Stat engine populate the results ?

Hi,

In our implmentation we have first implemented Demantra as a custom forecasting series. Now we are getting started with Statistical Engine.  I have some fundamental questions to calrify on the stat engine.

1) Which column does the engine populate the Stat  Engine results ? Please advice how to identfy the column from the BM . I see that the series 'Baseline Forecast' is associated with the column 'S_PRED_OLD' in the BM

2) Will this be problem in the stat engine ? We are pulling data @ item @ week @ customer. However we do not have the same part from the same customer for few months. So this is showing the lowest level information in the Sales_data was zero or null. How will the stat engine look at this data. I think this is a typical scenario where we have data at the lowest level but we will be forecsting at much higher level.