Reversed Bill Document in ETTIFN/0UC_INSTFACTS

Hi

For BI requirements, we are required to extract ALL billing activities related to Installation. What we are missing in the 0UC_INSTFACTS is the 'reversed bill document'. Is there a configuration change to get ALL bill documents in this ds? we need Original document and when revresed- the reversal details. If both happens on same day for a bill document, this table/DS wipes out the original as well.

I know we have 0UC_SALES_STAT_02 with details of line items but business doenst want to do manual logic of rolling up the line items to get the Usage,Demand QTY, amount and other key data.