Where is the mapping in display_units table maintained

where is the mapping for the fields in display_units maintined in demantra?can this be changed?if we execute the following query in our data base it shows that the sdata7 and sdata8 (data_field) are mapped to list price and COGS (display_units) respectively.

We would like to have this changed because in our implementation the fields sdata7 and sdata8 actually represent some other values in the table sales_data.

The stat forecasting engine apparently inserts sdata7 and sdata8 when creating forecasting entries and this is causing data issues in our case since sdata7 and sdata8 actually represent backlog and shipment qty in our implementation and not just harmless values list price and cogs.