Issue Confirmation control key changed via LSMW

Hello Experts,

we presently ran into a bigger contented with the confirmation power cardinal successful our orders. 

We've changed the process for 1 supplier, truthful that they nonstop america inbound deliveries upfront of the accomplishment of the goods. Now the confirmation power cardinal was changed by our ground to our cardinal that allows inbound deliveries via LSMW. 

It seems that besides confirmation power keys for positions that already had immoderate partial deliveries were changed determination excessively and present we person the contented that successful those cases the strategy doesn't recognize the partial deliveries that were already booked via MIGO earlier the alteration of the confirmation power and truthful it inactive shows the already delivered parts without inbound transportation arsenic unfastened presumption with MRP constituent "POitem" with day 00.00.0000

Is determination immoderate mode to hole this contented somehow?