3742233 - In ETO "Value from Production Order Cost Estimate" not used for GR in the production order - SAP S/4HANA Cloud Public Edition

For the same material, the goods receipts for some ETO production orders use the "Value from Production Order Cost Estimate"(strategy 2), but some use "Value from Make-to-Stock Inventory"(strategy 3) instead. Need to know the reason. 

SAP S/4HANA Cloud Public Edition

goods receipt, project stock, special stock Q, valuation strategy, qbew, lbwst, production order cost estimate, standard price, make-to-stock, cser status, planned cost calculation, material price change, mr21, valuated special stock, cser, Value from Make-to-Stock Inventory, Value from Production Order Cost Estimate, ETO, materials are manufactured with reference to a WBS element  , KBA , CO-PC-PCP-2CL , Product Cost Planning (Public Cloud) , CO-PC-OBJ-2CL , Cost Object Controlling (Public Cloud) , Problem