can we update the currency for PO based invoice

Current Business Scenario: Purchases of Software for Sri Lanka and Costa Rica where the Purchases are being done in USD, Invoice in INR (Budget and Approval also based on INR value). Currently the Standalone Invoice is created without reference of PO for such purchases. An extra Item line is created at invoice line level to adjust the difference between Invoice and PO Amount.

Business Requirement: Can business change the Invoice currency on PO matched invoice. for example, PO is created in USD and an invoice is created against this PO, Invoice currency should in updated to INR.