How to calculate cost for WO with specifc extra cost that replace A1 standard cost

Dear all,

I'm working for a prospect that need to split the material cost into packaging and sticker for all finished goods.

To make this possible, I've changed for each material the cost A1 into Y2 (packaging) or Y4 (stickers) , just putting &A1 in factor code simulated of the P30026.

When I'm running the simulated cost on finished goods, R30812, the system is able to correctly calculate the costs for Y2 and Y4.

But, when I'm running the cost calculation for a Work Order, R31802A, the system is not doing the split, it is systematically calculating on the standard cost A1.