How to see the Resource table used by CK13N

Dear All,

I am doing the Product Costing . The BOM Details are taken from MAST & STPO. But when I am seeing the CK13N, Resource shown is different for a Item. i.e. Which is showing the old data. How to fetch / see the OLD Bom information which is used by CK13N

Kindly give the information to see the BOM Details used BY Ck13n