Yes, it is. Files exported in expert mode are not manipulated in any way in the backup or reading process. Data-sheets and further information is available for investigators on request.
As well as a number of private forensics and recovery agencies, we have police and state forensics labs using our software around the world, from US Congress-funded law enforcement training programmes to the UK South Yorkshire Police, the German Polizei Hamburg Forensische and the Danish National High Tech Crime Center.