After up graded from 11i to R12.2.5 AR Reconciliation Report in parameters after selecting reportin
After up graded from 11i to R12.2.5 AR Reconciliation Report in parameters after selecting reporting level as "Ledger" then Reporting Context is by default it's pulling different Ledger instead of associated ledger. (Example A is associated ledger B is different ledger) it's pulling B ledger instead of A ledger.