That state of affairs made life harder for people who might want to back up their Borg segments by burning them onto BD-R. To organize that backup process, I created a temporary folder with a name like BORG_APR_Burning on another drive, UTILITY (U:), with subfolders like U:\BORG_APR_Burning\2020-01-01. From BORG_APR, I made copies of the relevant Borg segments onto U: for each such folder. (Again, I am using Windows drive references for simplicity. I could instead conduct these and other file operations in Linux.)