Co Product Price is not fetching from Production Version 1 During costing run of Production version2

Hi

During costing run (CK40N) of Production version 2 of Material x, system is not considering the Co-product price from production version1 it is considering the Material Master Price.

We have Material X it has two production versions with Multiple BOM,

BOM 1 of X Material with production version 1

1. Material A (Input Material)
2. 2.       Material B (CO Product)
3. Material C (By product)

During costing run of production version Co-product cost is correctly (say 270) apportioned as per equivalent numbers as per production version 1.

BOM 2 of X Material with production version 2

1. Material B (Input Material)  (Material master price 350)
2. Material C (Co-product)

During Costing run of production version 2 the input material (Material B) Price should fetch from production version i.e. 270 but not 350.

I have done the following setting Controlling and PP

1. Multiple BOMS created for  material X
2. Master Recipe created for both versions
3. Co product indicator activated in BOM
4. Source structure created.
5. All necessary setting done in Material master for Main material x
   1. Production Versions
   2. Task list type
   3. Group
   4. Group Counter
   5. Alternate BOM
   6. BOM Usage
   7. Apportionment structure
6. Joint production for Main material X
7. Apportionment done in Material Master for Material X
8. Mixed costing is maintained and it is calculating perfectly
9. Link has been created for CO product in Material Master By giving the Header material in production version..
10. Valuation variant sequence
    1. Planned Price
    2. Standard Price
    3. Moving average price.

Apportionment happening perfectly both main and co product.

But System is not considering the co product price from production version1,is fetch the value from Material Master during costing run of production version 2 of Material X.

Please suggest how to fetch price of CO product Material B from production version 1 in Production Version2.

Thank & Regards,

KISHORE