Hello TimeIndicator
As per our doc here, audience manager deletes user data from our edge servers 14 days after last seeing a user on the Audience Manager platform. If Audience Manager records user activity in within this 14-day cycle, we will keep this data for another 14-days. If the user becomes active again after the 14-day period, there will be a delay between that first new page view and when the user becomes actionable. It takes 6-18 hours to get the full profile back out to the edge center after more than 14-days of inactivity.
When we are saying user data,we are referring to Customer Ids or CRM Ids here.
Regards,
Shweta