LINE_ID and DELIVERY_DETIAL_ID

Hi All,

To my knowledge when you Book a Sales Order, a LINE_ID is created in the OE_ORDER_LINES_ALL table and a corresponding DELIVERY_DETIAL_ID in the WSH_DELIVERY_DETAILS table. This one to one relationship should never change.

If a line is split, a new LINE_ID and thus a new DELIVERY_DETIAL_ID  would be created, but still the original LINE_ID and DELIVERY_DETIAL_ID would remain the same.

Has anyone experienced these assignments updating so they are not as originally created, i.e. the DELIVERY_DETIAL_ID is no longer assigned to the original LINE_ID, but another newly created LINE_ID?