Production order settlement ?

Dear all

Iam working on MTO scenario., where the order quantity is huge in lacs once i complete some 25,000 i confirm my order and settle it , now in the first settlement the accounts hit the cost of production and inventory accounts , It is issued for the Sales order so stock becomes zero ,in the second confirmation for items of say 20,000 items we settle it it hits the Cost of production , Inventory , Price difference accounts . in the third confirmation also it behaves the same way , The valuation used is Moving average price here

Kindly suggest a soln so as to capture the costs in the inventory accounts only and not the Price difference accounts .

Regards

R.Rajaram