If I upload customer information using the database function can they click on forgotten password to complete there registration or would they have to register again?
If the
customers' emails are listed in the uploaded database file when the
customer goes to login, the website will recognize the email but no
password. Your customer can click the "Forgotten Password" link, and
they can then create a new password from the email sent to them. There
is no need to have the customer's register again.