Sign-change for Natural Accounts during data load through Data Management

Hi Experts,

We have a requirement from Business not to do sign-flip during data load in the FCCS application.Our source system is Oracle General Ledger (ERP) and Actual data is there as per accounting concept i.e. Revenue, Liabilities and Equities are consisting credit balance and Asset , Expense are consisting debit balance. Under Revenue or Liabilities or Equities, few natural accounts are containing positive data whereas few are containing negative data.Normally, what we follow as a general practice, we do sign flip during data load for Revenue, Liabilities and Equities and then apply the logic of Net Income = Revenue - Expense.