Status SETC disappears from production order

Hi expert,

I am confronted to a very strange behaviour of the system.

My client is using sometimes co-products in the BOM. At the production order creation, the settlement rule is created. So I have status SETC at the header.

But for some reason, when a change is made to the production order from the planning board, that status disappears, and order settlement can not be done.

I was not able to find out the nature of the change. All I could see was that in the Status Changes, the status disappeared due to the transaction Capacity Levelling.

Also, this happend to orders with co-product.

Can anyone help?

Thnks

Martin.