Unable to set default profit center in Foreign currency evaluation

my Client want to set default profit center for revaluation of a bank account, & gain or lost be posted to balance sheet adjustment account & OB09 is done accordingly.

Set the Bank GL default profit center by -FAGL3KEH settings(GL accounts). when doing the Foreign currency valuation of the said bank GL, revaluation amount is posted to original profit center, not the profit center defaulted in the relevant balance sheet revaluation GL.

EHP6 FOR SAP ERP 6.0