Error when trying to financial void check.

Hi, I get an error when trying to financial void a check. It means: check is printed + posted. Then I go to the Bank-Card and try to void the check. I use ‘USD’ currency (also the right bank for that, regarding currency code). When I want to void the check, I get an error that the Currency Code has to be blank. Why is that? Is it a bug. Navision version = 2.60b. Can anyone help me out with this? Thanks, Roelof.