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This presentation explores the path for Indiana University as a case study for migrating from Fedora 3 to Fedora 4. Specifically, it looks at the structure and stored metadata for objects across various collections managed in Fedora 3. Based on evaluation of object structures, common metadata properties, and possibilities of transforming XML metadata into RDF properties, a recipe for evaluating and making migration decisions will be shared. The Fedora 3 to Fedora 4 migration utilities (https://wiki.duraspace.org/display/FF/Fedora+3+to+4+Data+Migration) provide a way to bring Fedora 3 content over to Fedora 4 and make it functional, but using Fedora 4’s capabilities, particularly incorporating external triplestores and implementing the Portland Common Data Model (PCDM) mean it is worth considering how object structure might change for legacy digital objects and how metadata can be managed differently moving forward in Fedora 4. Collection examples will be examined and the evaluation process will show core/common metadata properties and common object structures mapped to PCDM.