SC with material code, in SAP PO, the storage location is blank

Hi,

Recently, we upgrade to ECC6.0, package:17, SRM is 4.0 remain unchanged.

Now, when user create a SC with material code, normally user did not key in storage location in SC, when SC is approved, PO is created in SRM and SAP, The material code is maintained storage location:SL01 in SAP material master data.

Now, seeing the PO in SAP, the storage location is blank. This is a big issue, it will have problem when creating inbound delivery.

Before we upgrade to ECC6.0 package:17, it is package:09, in SAP, the storage location will be automatically bring out in SAP, though it is blank in SRM.

Do you have any idea about this? In SRM, using Tcode: COMMPR01 to see product, i did not see storage location field, what SRM logic for this?

Thanks.