I'd suggest getting into the backup mindset before completing the updating of info phase.
Look at a simple solution for backup; something using a tool like FreeFileSync to do a one way copy from your PC to an external storage device (USB memory stick) of the calibre preferences folder along with the actual library folder.
While it's possible to use the calibre import / export command, we've seen too many issues with people havibng problems restoring from that form of backup.
Recovery from FreeFileSync to your PC is just a matter of either manually copying the data back to the correct locations, or using FreeFileSync to do a sync DROM the USB stick to the PC.
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