Preprocessing in RDF

Hi,

We are currently doing preprocessing at SKU level and it is giving satisfactory results except for the smoothing part.

The customer has mostly Short Life cycle products some of which has very low sales on a day level. When the Smoothing rule is run, the calculation of Median is causing the smoothed curve to have very low value as there are many low selling days. The forecast is being done at Option level ( one level up from SKU). Is it possible to do just the final step of the Preprocessing at Option level to get more meaningful output (Do the Out of Stock Correction, Outliers correction and Depromote at SKU level, and then aggregate to Option and then