invoice line item- freight charge

Hi,

I have an invoice line item with currency as INR of invoice IV1. There is another invoice IV2 with a line item in COP currency. I am using invoice line item result screen and by default it always show as USD only. Also we can have multiple invoices in multiple currencies and hence cannot default to a single currency. Note that the "display UOM As Entered" will not work in result screens. How can we achieve to retain the currency in the result screen(of invoice line item) what the user has entered while creating the invoice line item manually. The