In company the Inventory is managed in different currencies as per GRN (Procurement) exchange rate. All the subsequent posting should be posted with GRN rate. But this is not happening at this moment. All the subsequent transactions to GRN are posted on the posting date exchange rate.
How to do subsequent postings to GRN at the original GRN rate. If there is any exchange difference loaded at the time of Invoicing then it should be taken care while doing subsequent transactions.