That's what I do. I just plug in the watch and the workouts go to RA. Now, overnight, it says I need to install Garmin Communicator, which I come to find out is on the way out, so I'm prompted to install Garmin Express. I did so and it still isn't working. Then I read that it may take a day or two? I hate technology and it hates me.
Have you configured your RA account so it automatically connects to your Garmin account and pulls the new workouts? It's been working like this for a while, and I can't see anything else.
Troubleshoot: