As required by accounting law in some countries, mostly in Eastern Europe, foreign currency cash withdrawals from the cash desk and bank accounts should be converted based on the currency exchange rate as of date when the payment in the foreign currency was made to the cash desk or bank account. This means that the value of a withdrawal in a local currency should correspond to the value of a related receipt in a local currency. This process is very similar to the method used for inventory valuation; the methods valid for application of cash withdrawals are generally the same: FIFO, LIFO, weighted average, though in some countries which are allowed for such recalculation.

There was functionality for such calculation in so called "EAST" regional layer for Eastern European countries for NAV versions 5.0 SP1 FP1 and 2009 (and in some cases later ones) but it was quite simply and didn't covered some scenarios, like handling of overdraft accounts, yearly revaluations or corrections of bank transactions. A lot of Eastern Europe localizations still have such or similar functionality as it's deemed to be legally required by customers.

As maintaining such functionality is quite a huge effort and such functionality could be beneficial for many countries, it would be worth to consider to include in base BC international functionality.