When using social sign in as the login method for an already registered user with the same identifier (e.g. abc@xyz.de) the Automatic account linking ensures that this works. However, data mapping does not work for first name and surname, for example. The traits of the already registered user are not set. I can imagine that you don't always want this, but it should be possible to solve this (via a hook, for example?) so that I can access the properties provided by the social sign in Provider and (according to my logic) assign them to the user. Is there a way to do this?