To load a previously saved file, use the "Open save file" button on the
first screen. Provide the location of the file to load when prompted.
Once the save file is loaded, the file and folder tree will be displayed and the background validation starts if enabled in options.
The files should then be marked and copied normally.
If ZAR fails to match the physical device due to the disk configuration change,
various error messages may be emitted and the program will shut down.
Typically, there is no workaround in such a situation and the recovery have to be restarted (and disks rescanned).