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  Preservation Procedure Policy: Original object
Related Guidance Policy
Digital Object
Definition/ Description The National Digital Stewardship Alliance (NDSA defined the original object as ”the primary authentic and unique item, either the original or the closest surviving surrogate or copy, as originally acquired by the Library” .  Currently it is called the “received object”. Source:  NDSA  wikipage
Why During the life cycle of the digital object various preservation actions  might be undertaken in order to keep the originally ingested object accessible and authentic. This could be a preservation action resulting in a new digital object, e.g through migration of file formats. 
Although it is common understanding that the original object always will be kept in the repository, and that preservation actions will be done on copies of the original object, this might not be feasible in all situations. An organisation will need to develop a policy that describes how the organisation will deal with migrated copies, for example when several migrations have taken place, only the original object  and new version will be saved and no intermediate versions will be kept.
Risks It should be clear for the Consumer which version of the object the repository will keep.
In case of a preservation action, like migration it will be important to know before the action to determine which version(s) of the object will be preserved.
 
Life cycle stage Curate and Preserve, Appraise and Select, Ingest, Preservation Action
Stakeholder Management: will decide on the definition
Collection Manager (non Shaman): support management from point of view related to the content to preserve
Cross Reference Functional Preservation
Examples Nationa Archive and Library of New Zealand: : “Preservation actions […] will not directly affect the original item” Source:  http://archives.govt.nz/sites/default/files/Digital_Preservation_Strategy.pdf

Portico: “Portico will preserve content provider supplied updates to previously supplied content in the archive along side the original artifact, including original and updated metadata. “Source: http://www.portico.org/digital-preservation/wp-content/uploads/2011/03/Portico-Content-Update-Policy.pdf  
Control Policy For example, for a collection where only the latest and original version are kept:
  • Original version MUST be kept
  • Version with the latest creation date MUST be kept
Questions to foster discussions
  • Has your organisation decided on how to deal with migration copies? 
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