How to back up OSMAnd favourites using ADB?

First attempt to back up favourites to my PC after enabling USB debugging and connecting the phone to the PC: 1. Open OSMAnd+ 4.6.11 2. Click the hamburger menu 3. Click _Settings_ 4. Click _Export to file_ 5. Expand _My Places_ 6. Check _Favourites_ 7. Click _Continue_ 8. Give up because there's no option to save to a local file Second attempt, based on this : 1. adb pull /storage/[ID omitted]/Android/data/net.osmand.plus 2. Give up because net.osmand.plus/files/favourites.gpx has no favourites Third attempt, based on this : 1. adb backup -f osmand.ab net.osmand.plus 2. Unlock phone and answer backup prompt 3. Give up because osmand.ab is some 47 bytes How do I actually do a backup of favourites from my phone to my PC using ADB? The phone is *not rooted.*