We are looking to migrate existing users and allow them to use Social Signins to authenticate.
From trying this out with standard auth0 username/password and Google signins, it appears that when I authenticate with Google, even though there is an existing Username/Password with the same email, we would effectively have 2 different identities passed to our application is this correct?
If so how would you recommend we allow users to add social signin to access their existing accounts?
For this, I recommend linking the accounts together so that the secondary account (Google social login) can be linked to the primary account (username/password). Once the accounts are linked, there will only be one unified user profile.
I hope this addresses your question.
Please let me know if you have any additional questions.