Backup Path Lost When Switching USB Drives

RN102 with 6.2.3

I have backup jobs for each share to backup to a corresponding destination folder on a usb drive (Music share goes to Music folder on usb drive). Backup button is enabled for each job so I can hit the button at the end of each week  and backup over the weekend. Each month I switch out the usb drive. One drive shows up as usb_hdd_1. The other as usb_hdd_2. Since the folder path is different for each drive I have created backup job sets for each usb drive. When I run backups, I'll get an error for the usb drive set that isn't hooked up, but that's not an issue.

When I first switch usb drives and hit the backup button, I get an error for destination folder not found, even for the jobs that point to that usb drive. I then use the web ui to point the backup job to the destination folder and it works again as long as that drive remains connected. . The path is unchanged from when the last time the drive was connected. Is there a way to get the destination path recognized automatically?