I'm using Dropbox Backup to backup about 1TB of files on an external drive. I'm replacing the drive, and I've already copied the files to the new drive. Now I want to tell Dropbox to backup the exact same files, but on a different drive. I'm afraid if I just remove the old drive from the configuration and add the new one, it will remove all the files from the cloud, then re-upload them from the new drive, a process that will take several hours. Is there any way to avoid this?