I can confirm that as today. I was raging and doing folder copies before read here 🙂 Im glad i am a fast reader and did nothing except press Download.
The lack of the information prior to "download" button and "fear the *" is pretty unaceptable.
But the real thing is that once you press "download", you can select ANY folder, and then the "preparing" stage will check folder contents before download.
Only if there are missing files then it will be downloaded. If you have an empty folder then a full game will be downloaded. If you have an older install folder, pretty much files will be updated.
So, in short, just select your older game directory and you'll be fine. Only files verificacion will be done, no download involved.
Thank you for point that.
