On my Certificate of Selection they said they had alerted CIC that we had been approved. From my understanding, once CIC knows that they can continue to work on your application. It's been two months now since we received our CSQ and no updates have been made on Client Application Status page, but I hear this may not be updated until your application has actually been gone through by a visa officer.
In short, I think once you get your CSQ you just need to wait.