@Spoof 

Robot vacuum’s current map cannot be manually deleted, whether saved or unsaved, you can test this yourself. Also, an unsaved map is automatically cleared when switching maps.

I wonder if you might have accidentally deleted the correct map you intended to keep? If the abnormality does exist, please retain relevant evidence the next time you observe the problem, such as before-and-after screenshots or a screen recording of the operation, and then report it to our support team for further investigation. Contact Technical Support