Balakumar,
Go to partner profile settings - WE20.
Select the partner and then on the o/b parameters, select the message type and hit choose.
on the top of the screen you should see your partner details. These will get copied into your control record.
If you ask me where exactly does not copy, I am not sure and honestly I ould not be bothered about that as well.
If you looking for something specific for which you need to know HOW and WHERE this process takes place, let us know the scenario so that we can check if there are any other alternatives.
Thanks,
Vikram.M
Message was edited by: vikram Muralidharan