I was having a similar problem with AA disappearing while plugged in via USB cable. Someone suggested I get a better quality cable which i did. Just got back from a 1200 mile trip and with the new cable never lost AA once. Quality seems to be the answer.Yes this also happens to me, it would appear that Sync 3 is not displaying the Spotify app in the apps section which would cause that issue. I would also like to know why this happens.