Inquiry about Demantra Seeded Series Fore_minus_xxx

I ran the sql below and get the archived forecast as attached.

select forecast_type_id, computed_name, exp_template, computed_title, data_table_name from computed_fields where computed_title like 'fore%minus%' order by computed_name;

The attached data shows all the fore_minus series in Demantra. These series are supposed to store the archived forecast version. We run forecast every week under batch engine, which has engine_profile_id 1. In system parameters under batch engine, the parameter profile_forecast_version is set as 8, which means we need to archive 8 forecast versions. Fore_minus_0, fore_minus_1, fore_minus_2, fore_minus_3, and fore_minus_4 have the correct expression. For example, fore_minus_1 has expression sum(