Thank you! I'm so addicted to this game that I already sunk 10 hours into my new steam save and now I'm attached to it, but I hope this can help someone else.
You can have multiple saves. Go to manage saves and start new one. If you decided to transfer the browser data make sure you transfer it to fresh save (don't overwrite your current) You can then choose if you want to play both or maybe go for different builds. We are adding offline progress back at some point. So even just having it in there can be benefiicial