# Prompt Changed but Workflow Did Not

## Ontology Metadata

Code: ISS-0054
Version: ISS-0054@0.1.0
Ontology release: 0.1.0
Updated: 2026-05-10T00:00:00Z
Canonical URL: /workbench/issues/prompt-changed-but-workflow-did-not/

## Summary

A prompt changes but the workflow, parser, review step, routing rule, or downstream expectation still assumes the old prompt behavior.

## Category

- CAT-0080 — Changes & Versions
  - URL: /workbench/categories/changes-and-versions/
  - Summary: Problems where model behavior, prompts, contracts, schemas, outputs, references, rubrics, or expectations change without the surrounding workflow updating correctly.

## Primary Pattern

- PAT-0190 — Contract Drift
  - URL: /workbench/patterns/contract-drift/
  - Summary: A structural condition where a declared contract changes but connected structures, implementations, consumers, or expectations do not update in sync.

## Declared Patterns

- PAT-0190 — Contract Drift
  - URL: /workbench/patterns/contract-drift/
  - Summary: A structural condition where a declared contract changes but connected structures, implementations, consumers, or expectations do not update in sync.
- PAT-0150 — Interface Mismatch
  - URL: /workbench/patterns/interface-mismatch/
  - Summary: A structural condition where observed interface behavior, shape, or exchange differs from the declared interface contract.
- PAT-0180 — Compatibility Violation
  - URL: /workbench/patterns/compatibility-violation/
  - Summary: A structural condition where a graph, object, behavior, or runtime state exceeds a declared compatibility envelope without an authorized exception.

## Derived Primary Lenses

- LEN-0130 — Compatibility Envelope Lens
  - URL: /workbench/lenses/compatibility-envelope-lens/
  - Summary: Determines whether structure fits within declared runtime, platform, version, or support constraints.
- LEN-0170 — Convergence Lens
  - URL: /workbench/lenses/convergence-lens/
  - Summary: Compares parallel structural systems to determine whether they align under shared authority.
- LEN-0200 — Interface Contract Lens
  - URL: /workbench/lenses/interface-contract-lens/
  - Summary: Compares declared interface structure to observed runtime structure to detect contract deviations.
- LEN-0270 — Reconciliation Lens
  - URL: /workbench/lenses/reconciliation-lens/
  - Summary: Evaluates whether structural changes align with declared authority updates, version changes, or reconciliation rules.

## Derived Secondary Lenses

- LEN-0120 — Boundary Compliance Lens
  - URL: /workbench/lenses/boundary-compliance-lens/
  - Summary: Evaluates observed structure against declared boundary posture, including allow, block, and exception rules.
- LEN-0180 — Determinism Lens
  - URL: /workbench/lenses/determinism-lens/
  - Summary: Evaluates whether identical structural inputs produce equivalent structural outputs across repeated executions.
- LEN-0230 — Normalization Lens
  - URL: /workbench/lenses/normalization-lens/
  - Summary: Transforms structurally equivalent variants into a canonical form to prevent false divergence.

## Search Intents

- prompt changed but workflow did not
- prompt update broke workflow
- workflow still expects old prompt
- AI prompt changed downstream did not
- updated prompt incompatible with workflow
- prompt changed parser still old