undo reconciled journal entry record

https://github.com/frappe/erpnext/issues/4661
diff --git a/erpnext/accounts/doctype/bank_reconciliation/bank_reconciliation.py b/erpnext/accounts/doctype/bank_reconciliation/bank_reconciliation.py
index 6f506d6..7b528bc 100644
--- a/erpnext/accounts/doctype/bank_reconciliation/bank_reconciliation.py
+++ b/erpnext/accounts/doctype/bank_reconciliation/bank_reconciliation.py
@@ -51,15 +51,11 @@
 				if d.cheque_date and getdate(d.clearance_date) < getdate(d.cheque_date):
 					frappe.throw(_("Clearance date cannot be before check date in row {0}").format(d.idx))
 
+			if d.clearance_date or self.include_reconciled_entries:
 				frappe.db.set_value("Journal Entry", d.voucher_id, "clearance_date", d.clearance_date)
 				frappe.db.sql("""update `tabJournal Entry` set clearance_date = %s, modified = %s
 					where name=%s""", (d.clearance_date, nowdate(), d.voucher_id))
 				vouchers.append(d.voucher_id)
-			else:
-				frappe.db.set_value("Journal Entry", d.voucher_id, "clearance_date", None)
-				frappe.db.sql("""update `tabJournal Entry` set clearance_date = NULL , modified = %s
-					where name=%s""", (nowdate(), d.voucher_id))
-				vouchers.append(d.voucher_id)
 
 		if vouchers:
 			msgprint("Clearance Date updated in: {0}".format(", ".join(vouchers)))