File Cache
File cache will auto backup your edited xmind files on the device.
Retrieve Previous Files
In the event of loss due to a power outage or computer shutdown, you may recover your work from File > File Cache > Select the file > Retrieve.
Kindly notice that only 9.1.0 or later version supports File Cache. And to safeguard against accidental loss, it’s advisable to periodically save your mind map.

Clear Cache
You can clear file cache and remove temporary files and data stored by the app to free up space. You may clear file cache from File > File Cache > Select the file > Clear Cache.