Purge List Members
When the imported records for a list segment are no longer valid or your organization no longer has permission to use those records, you can purge the list segment’s import history from the system. From the list segment's Import History tab, expand the import process and select the Purge task button.
Once purged, the list segment remains on the list’s Segments tab and the segment’s Import History tab with a status of “Purged”. The list segment no longer contains identifying personal information for its members (such as name or address), but their finder numbers still return marketing effort information.
Note: You can purge or delete only import histories with a “Historical” status.