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I've all my music on OneDrive and my "your groove" works perfectly, but I've my own playlist which I created by my own, there is a toggle that make it available offline, the question if I touch that toggle it will affect "your groove" because I don't have a cellular data when I'm out home and I want to l listen to them offline.
The only way I can possibly imagine that having any effect on "your groove", is that the playlist "your groove" creates will slightly expand to include some of those songs.
For example: I have most of my music on Onedrive for streaming and a limited selection is available on the phone itself. Every time I add a few new songs, one or two get picked up and added..
But that's just my experience