Yes, you can save the map data after unbinding. During the unbinding process, you can choose to retain device data to keep the map information stored in your Navimow. The map data will be available for use with a new account after binding. To retain the map data, go to Settings > Mower > My Device>Device Management>Unbind device, and select Retain Device Data. Alternatively, selecting Factory Reset will clear all data from the device.