Negative Work Order Completion

Hello Everyone

Scenario: We periodically need to break a product back to its components and put the components back into inventory. To achieve this - Created a WO with a negative Quantity. When the Super-backflush program is done it issues the component and puts it back to inventory, but on the completion screen (P31114) it gives an error "Quantity exceeds amount completed".

Any Input?.. It's not a serialized or lot item.

Document attached on the steps that was done.

Thanks

SM