This is what you'll want to do if, for example, you were recording a session and decided to take a ten-minute break. It will work for any situation where you want to continue a session that already started recording.
move the transport to somewhere after what you've already capture. You can do this either by using the forward/reverse and play/stop buttons on the transport, or by finding the point in the timeline where you want the transport to be, and then left-clicking somewhere in the time-line.
Verify that the connections and levels are still set correctly.
Verify that the recording tracks are still armed.
Arm the transport.
Start the transport when ready to record.
