I have a m-audio keyrig usb connected into logic to play software instruments. I have no problems getting sound and recording. However, when I delete an unwanted recording and re-record it, the track mutes!! The way i get the sound back is I duplicate the same track with all its wanted settings, and pull down the recording to it. and it plays back normally. But it's such a hassle to have to do that over and over again. Also, When I record on an existing track, if the live recording overlaps, it deletes the existing... whereas in past projects, it would add to the existing with no problems. I want to kill these bugs and understand why this is happening. Can anyone help?!