Profit Center Accounting-Transfer of Accounts payable/Receivable

Dear All,

in our company SAP was implemented in 2005 . Now we configurd PCA and transfering the Ending balance of Accounts Payable/Recivable ( Transaction 1KEK). System only select the invoices which were posted in last month ( Feb,2009) and ignore all the open invoices which were posted before Feb,2009.

Please advise me, How I'm able to post the ending balance of Accounts payable/Recivable on respective profit center.