Migrating a site is always a challenging task, but when you have dozens of subsites with specific brand standards and custom user functionality, the challenge becomes mammoth. Six Feet Up worked hand-in-hand with Purdue’s College of Engineering to migrate their existing Zope site and its subsites into a new Plone instance running on Plone 5.2 / Python 3. Throughout the migration process, we considered the project scale, timelines, and limiting the impact on end users — all while managing the balance between user needs and best practices. During this presentation, you will learn: - why it matters to think user-first during migration, - about creative solutions for translating content and functionality into Plone, and - how to successfully migrate subsites.