Multi-box details visible after order shipped

The system currently shows what SKU's/qty's are in a particular box when you are in the processing view however once the order is shipped you no longer know what was in each box. It would be good to have visibility after it is shipped in a breakdown within the order details both in the WMS and the OMS. Example: Box 1 - SKU1 qty 5, SKU2 qty 5 Box 2 - SKU3 qty 1, SKU4 qty 1