1. This is clearly the plan, the latest update from 1.0.2 to 1.0.3 does not have any impact on the user data. 2. Nope sorry, by (FIDO2) definition there is no way to backup the user data, the recommended way to achieve this is to set up an alternative login method with another FIDO2 stick or whatever is available the service (like TOTP or something). Overall currently the user-data warning is in the documentation for safety reasons and due to the fact that the 1.0.2 update was invalidating the user data, it will be updated soon with a warning for specific versions the update is started from. E.g., updating from <= 1.0.1 will invalidate your user data, >=1.0.2 currently won't.