Error in Partner determination Profile

We are facing 1 issue in our Project.

The details are as below :-

1) We have SAP CRM 5.0 integrated with SAP ISU ECC 6

2) In SAP CRM, for Service Contract ,we have Transacton Type BUS2000112 ; which has partner determination profile ZISU0001 for the header and has following partner functions a) 000000001 Sold To party b) 000000015 Contact Person

3) For Contract Line Item we use , item object type BUS2000147 , which has partner determination profile ZISU0002 with Partner function

a) 000000001 Sold To party b) 000000015 Contact Person c)000000014 Employee responsible.

4) We have 1 Action profile which triggeres automatic renewal of the Contract Line item in which it copies the Old contract Line item to new contract line item.

5) Now we are facing 1 issue here; for the new Contract line item the Employee resoponsible is not copied from Old Contract Line Item to New Contract Line item.

Because of this the replication to SAP ISU is not working as there is error in the CRMD_ORDER.

The error is "Enter Employee Responsible"

6) If we manually enter the employee responsible the error is not there and replication works.

Some how It is only populating partner profile from header level instead of Item level.

If any one can guide us in resolving this issue or any SAP Note which can fix this.