How do you test your client's backups and how often? Specifically for shadow Protect if you use that.
Have you been able to automate that?
What we do is MANUALLY quick mount the most recent image then use beyond compare from scooter software to compare the hard drive to the quick mounted image of the hard drive. only differences should be files changed since that last incremental backup.
although, being experts here, are you restoring as a VM? If it boots it's a good image? Do you stop there? Do you actually compare all files also?