If Archive Manager is setup with 3rd party storage locations, EMC Centera, Bridgehead HDR, IBM DR550, NetApp SnapLock, or Caringo DX to store your attachments, when using search exporter no attachments are being exported.
In the SearchExporter log (C:\Program Files (x86)\Dell\Archive Manager\Tools\Search Exporter\SearchExporter.wlog you find the following errors.
2015-02-06 10:31:00,254 [9] ERROR MailExporter.Exporter - {{0066f86e-59c1-4fb4-bd64-8caf186c6c75}} Failed to get attachment http://am.archive.company.com/DefaultInstance/ViewAttachment.aspx?CheckSum=61e2d5bb-d738-36d5-fdaf-a0d4357964f3.
System.Net.WebException: The remote server returned an error: (500) Internal Server Error.