R12 - Remove Fulfilment set from the cancelled line

Hi,

Have an order with lines 1.1, 1.2, 1.3 & 2.1 of which line 1.2 as been closed. There is fulfilment set '1' assigned to line 1.1, 1.3 & 2.1.

The line 1.3 has been cancelled but the fulfilment still exists, while line 1.1 & 2.1 are in Awaiting Fulfilment status.

Need to invoice line 1.1 & 2.1.

So how can we remove the fulfilment set from line 1.3 which is cancelled.

Thanks,

Vijay