What does the Data Value Change activity with following reasons mean?
System flow action sysActionChangeDataValue updateLeadEmailStatus
System flow action sysActionChangeDataValue resetLeadEmailStatus
Both Data Value Change activitiy reasons are a result of an automated process known as Durable Unsubscribe
'updateLeadEmailStatus' refers to durable unsubscribe updating existing records. So when a record's unsubscribe value get's manually changed, the other duplicate record(s) that has the same email address will get updated by the durable unsubscribe and 'updateLeadEmailStatus' will be logged for the updated leads.
Whereas, 'resetLeadEmailStatus' refers to durable unsubscribe updating a new record, when it's existing duplicate record(s) that has the same email address have 'unsubscribed=true'. So when a new record is created and the other duplicate records have 'unsubscribed=true', the new record will be updated by durable unsubscribe and 'resetLeadEmailStatus' will be logged for the new record.