Migration is easiest when you split it into predictable phases. This checklist gives engineering and content teams a low-risk path from JSON to Toon.
1. Inventory Current JSON Usage
List all producers, consumers, and transform scripts. Mark which files are shared across pipelines.
2. Freeze Schema Changes Briefly
Pause major schema edits during migration to avoid branch drift and repeated converter updates.
3. Convert and Diff
Run JSON -> Toon -> JSON round-trip tests and compare outputs to verify zero data loss.
4. Roll Out by Feature Slice
Migrate one domain at a time (characters, scenes, timing metadata) and measure build impact.
5. Keep a Rollback Path
Maintain dual-read support for one release cycle so you can revert quickly if edge cases appear.