I actually tried loading the backup from my existing system on top of a clean installation, and saw the file location on the UI, but got errors when trying to browse. Don’t have logs of that. It was after that failed that I did another clean install, and am trying to get SMB to work with the clean install.
After doing more digging wondering if I should try switching to the “mount via fstab” approach (Configuring fstab based Samba share mounts)