Client Issue

I am on a ECC 6.0 platform. I have been working on the same client (100) for both ECC and BW. Now a new client has been created for BW (200) on the same instance. After the creation i went to the table RSADMINA and changed the BW client number to 200 but when i enter RSA1 it says the logical number of the system has been changed. What other steps do i need to execute to be able to work on client 200 for BW.

Thanks,

Rashmi.