Right now what is happening is at first install Notifications DO NOT need ATNManager to forward them, they work just find with only gear manager. But after some time and a couple notifications (changes on case to case basis) notifications will just stop forwarding. Every now and then they will come back, if you're lucky.
I've been screwing around with ATNManager after finding a bug (posted here) and found that clearing the cache for the app fixed it. I could forward 1 notification before I had to reset cache on ATNManager.
I applied the same idea to the Gear Manager app (not Connection Manager or Gear2 or any of the other) and my notifications magically started working again. Both had a cache size of exactly 68.00kb.
I hear there is an australian Gear Manager that fixes this issue, but I can't install Samsung Apps to download actual updates so I can't install it to test. If someone can get that version of the Gear Manager can you please post the APK?