When a business unit uses the option “Subscribers will be unsubscribed from this business unit only”, the subscriber status of a user relative to that specific business unit is not easily accessible. Knowledge Article 000230283 details a way to obtain these subscriber statuses, but I do not fully understand how the steps mentioned there actually work.
While it is not explicitly stated, the steps suggest that importing an extract of the parent
_ListSubscribers table into a new list created for the business unit will filter the inbound list to subscribers for the business unit only. Is this because the resulting list is filtered to subscribers applicable to the business unit? As an example, if a subscriber is unsubscribed for the given business unit only, where in this workflow is that subscriber flagged as unsubscribed, rather than subscribed (as they would be in the