A presentation at Samvera Connect 2019 described thus and Although it feels like we just migrated from CONTENTdm to Hydra/Fedora 3, it's time to adjust course back to Hyrax! Oregon Digital's Metadata Team will talk about strategies and challenges with metadata preparation, remediation before migration begins and mapping updates. The Migration Team will talk about the gem we're building, hyrax-migrator, to allow us to migrate over 465,000 assets (files and metadata). We’ll cover the design and implementation of the gem which supports migrating assets both locally (for dev and testing) and remotely (for production, on AWS S3), and share our progress with a batch of about 1000 ‘seed data’ assets, as well as our goals for scaling up in the coming months.