I have a question about multipass API`s Identifier field.
I have web site where user can change their email address.
And don’t want to have to create accounts on Shopify for users, so I’m trying to use multipass login.
Consider the scenario that a user performs two multipass logins with Identifier field, but prior to the second login attempt, the user changes email address at external (Our) website.
Does the second multipass login, which passes the new email address with same Identifier, result in an update to the Shopify customer record or create new customer record?
In case new customer record will be created, do I need to use customerUpdate(Admin API) and update customer email before second login to avoid creating new customer record ?