When updating a delivery date on the Sales Order in the production company, the discounts given on the original sales order in the sales company is erased.

The code has an exception when intercompany chain is involved. The prompt is dependent on the fields SYSTEMENTRYCHANGEPOLICY and/or MANUALENTRYCHANGEPOLICY. If one of these two fields are set on the sales line, then if the confirmed delivery date on SO is updated, then you are prompted for behaviour concerning price and discount. These fields are not copied in the intercompany chain and therefore the fields are only set on the original sales order - not on the intercompany order.