# Backup-Verified Migration

> For each target class, create a recoverable checkpoint, refactor it to extend or use the abstraction, verify the removed anti-pattern no longer exists, and restore from backup on failure.

Record: `algorithms:backup-verified-migration`
Kind: algorithm
Canonical: https://banes-lab.com/ontology/algorithms#algorithms-backup-verified-migration
Closure: https://banes-lab.com/json/records/algorithms/backup-verified-migration/closure

Listed in [Algorithm contracts](https://banes-lab.com/api/records/algorithms.md), after [Migration Ordering](https://banes-lab.com/records/algorithms/migration-ordering.md) and before [Anti-Pattern Elimination Verification](https://banes-lab.com/records/algorithms/anti-pattern-elimination-verification.md).

## Domain

- [Pattern distillation](https://banes-lab.com/records/algorithms-domain/pattern-distillation.md)

## Stage

- [act](https://banes-lab.com/records/stage/act.md)

## Axis

- [formalization](https://banes-lab.com/records/reasoning/axis-formalization.md)

## Tier

- [process](https://banes-lab.com/records/vocabulary/domain-tier-process.md)

## Composed by

- [Custom-Rule Derivation](https://banes-lab.com/records/algorithms/custom-rule-derivation.md)

## Named in the derivation of

- [Pattern Distiller Kernel](https://banes-lab.com/records/algorithms/pattern-distiller-kernel.md)

## Math type

- [Computation](https://banes-lab.com/records/reasoning/math-type-computation.md)

## Force

- [Architecture evolution](https://banes-lab.com/records/force/architecture-evolution.md)
- [Correctness verification](https://banes-lab.com/records/force/correctness-verification.md)
- [Streaming dataflow](https://banes-lab.com/records/force/streaming-dataflow.md)

## Linked from

- [Pattern distillation](https://banes-lab.com/ontology/algorithms/algorithms-domain-pattern-distillation.md)
- [Quality engine](https://banes-lab.com/ontology/algorithms/algorithms-domain-quality-engine.md)
- [The derivation loop](https://banes-lab.com/ontology/reasoning/reasoning-loop-derivation-loop.md)
- [The axes](https://banes-lab.com/ontology/reasoning/the-axes.md)
- [The mathematics](https://banes-lab.com/ontology/reasoning/the-mathematics.md)
- [Domain tiers](https://banes-lab.com/ontology/schema/the-vocabulary-domain-tier.md)
- [The forces](https://banes-lab.com/ontology/schema/the-forces.md)