Simulator Change?

Did something change in the Simulator? I can't seem to find out to initial/start the simulated activity any longer. I see "adb Connection" with a Start. That isn't it. And under Simulation/ActivityData there is this - Start/Stop under Data Field Device Controls... that seems like that is the new UI to start it, but that doesn't seem to automatically send Power, HR and other data to the data field... What did I miss? This has got to be something simple I'm not seeing. THANKS!