I've ran a strange situation. In the operations in routings we make use of control key PP01, that indicates that the operation is relevant for costing. For all existing plants it works fine: when a production order is created, the operations in the production order have indeed control key PP01, the operations overview shows that indeed the operations are relevant for costing.
However for a new plant (we are currently testing it) when a production order is created, the operations in the order have control key PP01 BUT the operations overview shows that the operations are NOT relevant for costing. And indeed, when a labor confirmation is made with CO11, the costs do not show up on the order.
It becomes even more strange (at least to me) . . . When I create a production order for that new plant and immediately after creation, change the control key in the operation order to another one, save and immediately change back to PP01 . . . the operation is now relevant for costing!
Does anyone have a clue what is going on?