Prevent further invoices against a limit order

Hi

We have a limit order (service type D) and several posted invoices against it and want to prevent any further invoices being posted against the order.

Example:

Order                1 @     £348

Confirmation      1 @     £348

Invoices            1 @      £178

                       1 @      £2

                       1 @      £89  

                                   £269  

In MIRO we still have £79.00 showing, however we want to prevent any further invoices being posted against the order.

I have tried to change the expected order value to £269, which did'nt work.

There are no items to clear in MR11.

I am not able to reverse the confirmation because there are invoices allocated against it.

Any Ideas?

Thanks in Advance.

Jo