I am currently doing the same thing. I have a creative cloud subscription. I am moving from an old mac to a new PC. I was able to download the Creative Cloud App and install Lightroom. My images all imported seemlessly, it was awesome. My presets are not moved over though. And this feels too easy. I feel like I should be moving my .lrcat file from my old mac onto my new PC? This really feels like I am going to lose information just installing a new lightroom and populating images to the cloud.