Display additional field in planned order/production order from Sales order line item

Hi all,

We are following DI, MTO planning strategy. We used to maintain customer requirement as sales order to get a planned order by running MRP. We have added one additional field by sales order line item wise. When ever we run the MRP, this additional field wants to copied into planned order and the same will be copied into production order which we convert from that specific planned order.The customized additional field is added into standard table "Sales Document: Item Data". How can we carry/link and display this additional field into planned order as well as production order?

Thanks