Saving new data to an external source is not automatic and needs to be turned on in the Mapview Settings. You will see the toggle at the bottom of the Settings menu under 'Save new contact to device'.
*If you cannot toggle the button on, open the 'Choose groups to sync' menu and make sure your default source is set to sync.
Changing the default source
If the default source is not where you want to save your new contacts, you can change the source in the Settings application of your device.
- Open the Settings application
- Tap 'Contacts' on your device
- Tap 'Default Account'
- Choose the account you want to make your default
- Exit the application