Post Balance by Currency

Hi

We are implementing multi-currency processing for a new company that  is being  set up in JD Edwards EnterpriseOne.  If I choose not to implement Post Balances by Currency will I still be able to calculate unrealised gains/losses for this company?  There will only be two accounts with foreign currency balances: debtors and a foreign currency bank account. We will need to revalue both accounts at period end for reporting purposes.

My understanding is that the F0911 table stores the foreign currency transactions and if we don't active PBC then the F0902 table will not have any foreign currency records. Hence my questions as to whether  JDE requires Post Balance by Currency to provide FX revaluation reports etc.