How to Change Content Models Without Losing Content on a Live Prismic Site

As websites mature, their content models often need adjustments to accommodate evolving designs and team requirements, which can be challenging when using platforms like Prismic, where content is tied to specific fields. This guide provides strategies for implementing common content model changes without losing published content, such as renaming fields, altering field types, splitting fields, making fields repeatable, and redesigning slice variations. These changes are facilitated through tools like Prismic CLI and AI agents like Claude, Codex, and Cursor, which can automate the migration of content to new field structures while ensuring the website remains functional throughout the transition. The process involves adding new fields, using the Migration API to transfer content, updating code to utilize new fields, and eventually removing outdated fields once they've been fully transitioned. The guide emphasizes careful planning and gradual implementation to minimize disruption, ensuring content integrity and site stability, and references Prismic documentation for further insights into the tools and techniques discussed.

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