H.6.3 Migration Automation

Automation applies a transition model; it is not the migration's decision authority.

• Prefer semantic transforms or structured editors when textual replacement cannot preserve meaning.
• Make transformations deterministic and idempotent where practical, then validate both changed and unchanged populations.
• Review semantic inputs, tool versions, exception handling, and representative output—not every repeated line equally.
• Produce reproducible commands, affected-consumer evidence, repair guidance, and a bounded manual path.
• Version the tool with the migration and remove or repurpose it when the old state retires.