When the settlement is run for an internal order or a WBS element, although the primary cost element line has the trading partner information, this information is lost after the settlement process. The settlement can not carry the trading partner detail further. I can see this detail in CO tables or in PS tables before it has been settled. (Tbale name is COSP) But the table that keeps the settled objects (as far as I kow the table name is COSS) does not have the trading partner field in it.
If anyone knows whether there is a way to keep this type of detail after the settlement process has been executed in the system, it would be great.