Deep Copy Opportunity Positions

Hi,

According to Siebel Developer's Reference > Business Component User Properties > Controlling Parent and Child Relationships >Copying and Deleting Child and Grandchild Records-


"You must not use Deep Copy if the parent-child relationship is a many-to-many (M:M) relationship. Instead, you can set the No Copy property to FALSE in the link that Siebel CRM uses for this parent-child relationship."

When I set the "No Copy" property to FALSE on the Position MVL I get the following error when copying an Opportunity record:  "SBL-DBC-00111: An error has occurred writing to a record."

Am I missing something or is this a defect?  I am testing this on 8.1.1.10 using a sample database.