When using an Imported List to send email, users can include a link to an Event Registration. From the email, Registrants can sign up for the Event. When this information appears under Web> Manage Web Transactions Batch, users can see the original email information listed under Transaction Details. However, after committing the Batch, none of the email information is recorded on the record.
This issue will not be addressed. It has been reported only 1 time in 3 years, and has minimal impact on workflow.