Do I keep anything if I migrate from MS Store to Steam?

Hey people, I've played DE on MS Store since it came out, but I want to make the switch to Steam because of a lot of reasons (it's the platform everybody uses, MS Store is crap, no CaptureAge etc etc).

I'm pretty sure this will reset my elo, however is there a way to keep all of the mods and rewards I got during previous events? Will anything carry over with my Xbox Live account? Thanks for the help!