WBS commitments for PR Changes done

Dear Members

Following is the Budget Related Scenario we are facing in system.

WBS changed in PR from WBS 1 to WBS 2

Budgets in system against WBS2 ; PO and GRN done against WBS2; stock in WBS 2.

Now when material is issued system is posting consumption entry against WBS1 . In case WBS1 budget is available system allows posting while if no budget exists against WBS1 system will give error.

My query is why the system is checking budgets against original WBS when PO and stocks maintained in another WBS.

Is there any program to correct the error. I have already done CJBW, CJEN and CJBN but still error un solved.

Regards