You can migrate from Supabase Auth to Neon Auth with a simple three-step process. First, export your users from Supabase by running a SQL query that retrieves all users and their encrypted passwords. Then, set up your Neon Auth tables by selecting the "Setup Stack Auth" option in the Neon Auth menu. Finally, import your users into Neon Auth using the Stack Auth REST API to create new users with preserved password hashes. This process allows for secure, continuous authentication while maintaining data ownership.