We have a Journey that uses an Automation Studio Audience. The Automation was Run Once. An Email went out correctly to EmailAddress 1. Then the EmailAddress 1 was updated to EmailAddress 2. After a Wait Activity (1 hour) a second email was sent. The email went to the original EmailAddress 1 not the updated EmailAddress 2. In addition the All Contact record still shows the original EmailAddress 1.
The Journey Settings show Use email attribute from Entry Source. Shouldn't the 2nd email have gone to EmailAddress 2?
How does an email address get updated in All Subscribers and/or All Contacts? Support is telling me it has to be an API call or manually.