Yea.. I would say leave the copy as it is. Download the patch and check if it's working if not then dowload it again. If works saves time, if not spend an extra 30 mins.Soooo... To be safer and have it downloaded from scratch, I deleted the downloaded data and will load them again with the purchase tonight. This is me saying it but I'm sure if you leave it as it is, all you'll have to do is just download the patch once purchased.