How do I set my Edge 520 to automatically upload a ride to Garmin Connect?

For the first month that I owned my 520, my rides would be showing in my mobile connect app by the time I got into the house after a ride. Now I have to go the the 520, select the ride I just completed, and click "upload ride" before it will show on my mobile device. I've had a software update or two since I got it and I'm wondering if one of them changed the auto upload feature.

Thanks for any assistance.

Bgrider