Hi @Sigkill9,
Welcome to Auth0 Community!
If a user has not yet migrated and they go to change their password, Auth0 will use the get_user script to find the user and actually create a “semi-migrated” profile for them with the new password. When they then log in with the new password, they fully migrated profile will be created for the user account. Here is a link to another community post with a more detailed explanation of this process: Custom Database with automatic migration -> resetting password for un-migrated users - #7 by thameera
Hope this helps!
Thanks,
Dave