https://nch.invisionzone.com/topic/38042-help-please-how-do-i-undo-a-bank-reconciliation/?do=findComment&comment=100386
https://nch.invisionzone.com/topic/35647-bank-reconciliation/?tab=comments#comment-95186
The last date of reconciliation cannot be changed, but the new statement balance will be change if there are additional transactions or edits