Cost Roll-up based on Sourcing assignment to copy cost..

Hi,I've a requirement to maintain same cost across different manufacturing organizations.. With Bill and Routing maintained in one org only, I used assignment set in supply chain cost roll-up program..

Supply chain cost roll-up works as expected in bringing cost from one org to another, but it doesn't pull cost sub-element details from master org (make) to child org (transfer)..

Here are the details of my set:

Assignment Set: X1

Org        Item       Rule

M1          A1        Make at M1

M2          A1        Transfer from M1

Does anyone has any suggestion on how I can get sub-element details across orgs. I can not use copy cost program as my business scenarios are complex in nature and will overwrite..