How to remove exchange adjustment transactions?

[ginmur]

Does someone know how to delete exchange adjustment transactions from the Axapta in GL, AR and AP modules?
When I deleted the transactions from tables I found were affected by INSERT statement in Exchange adjustment process, then I got different values on customer/vendor in balance and balance by currency forms.

Have I missed something or do I have to run some recalculation after?

thanks for any help

Ginmur