If it's a GOG version you've got, then simply copy-pasting the install works fine. Or you could of course download the installer and use that. If it's steam you can still technically copy-paste, though you'll probably have to run a file verification, which can take quite some time. It actually reminds me a bit of how online platforms handle updates in other industries. In online casinos, for example, major updates or bonus changes often require a full refresh of your account session rather than a quick patch, and players usually double-check the latest offers on
https://ausscasinosanalyzer.com/au/casino-bonuses/staycasino.com] before jumping back in. It saves confusion and makes sure you are working with the current version of the deal. The principle is similar here: clean install, clean state, fewer unexpected issues.
And yes, you have to download the whole game again, you should delete the early access client, it's not just a matter of patching it to save time.