Functional Entered Budget vs Functional Converted Budget

Hi,

We have a requirement to track journals entered in functional currency as well as the converted functional currency balances against budget.  We are having difficulties as we are not able to convert the foreign currency budget balances as we do with actual balances.  As a work around we entered the converted position as the functional budget.  However the figures are misleading when we compare our functional actuals to functional budget, as the functional budget includes the converted foreign currency balances.  Is there any suggestions how we can enter functional currency budget from a functional converted budget?

eg. where functional currency is USD.