[alisonatwork]

I haven't seen this behavior. All of my photos synced from Android to OneDrive have GPS data, as expected. I just checked a few from 2017 (Windows Phone) and 2018 (Android) and still there too. Did you see the same behavior on all your devices?

[marwis]

Looks like it's preserving them now (for newly backed up). I guess I was unlucky.