If you're on PC, you can use the backup tool in the launcher, under Config. It's the fastest and easiest way to save/copy it until they enable the server-side backup.

But if you're on console, I don't think that that's available. And same thing regarding transfering the config between it and PC, or vice versa. For that you'll have to wait until they enable the in-game option to copy it to the servers, sadly.