An important facet of the long-term usability of digital content is the trustworthiness of preservation metadata as it is migrated across successive generations of preservation platforms, accompanying the content it describes. There exists little investigation into and few practical examples of the implications of replacing preservation platforms, and on interchangeability of preservation metadata across platforms. PREMIS is a widely implemented standard for expressing metadata to support the preservation of digital objects and ensure their long-term usability. Like most standards, PREMIS has undergone some major revisions as well. This presentation addresses these issues in the context of concurrent migrations from Islandora version 7 to Islandora version 8 and from PREMIS version 2 to PREMIS version 3.
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