Bank transactions reconciled/unreconciled usually runs automatically when you reconcile your bank, but they are runtime reports, which can only be run at the time the reconciliation takes place.  As a workaround, you can amend the Cash Book Transaction Report and add a criteria on for CBPostedAccountTrans.LastStatementDate - which is the Statement Date entered on the top left of the Reconciliation, which you can use the criteria to filter the reconciled transactions.

Ah right okay thank you.