agent applied the MSA's 2023 IP assignment language - Amendment 6 replaced it and the agent never re-extracted

TL;DR

Invalidate cached clause extractions when an amendment replaces them. Parse each amendment's replacement targets ("Section 12 is replaced in its entirety"), purge the cached extraction for those sections, and re-extract from the amendment text. The cache assumed sections are immutable, so the 2023 IP assignment kept serving after Amendment 6 replaced it.

agent applied the MSA's 2023 IP assignment language  -  Amendment 6 replaced it and the agent never re-extracted

Steps

1. Parse every amendment for replacement targets: section numbers named with 'replaced', 'restated', 'deleted', or 'superseded'.

Expected: Amendment 6 yields an affected-sections list including the IP assignment section

1. Purge cached extractions for affected sections the moment the amendment is ingested.

Expected: the 2023 IP assignment extraction is gone from the cache, not merely flagged

1. Re-extract the affected clauses from the amendment text itself.

Expected: the current IP assignment language comes from Amendment 6

1. Add a staleness check: any extraction older than the newest amendment touching its section is dirty and must be rebuilt before use.

Expected: dirty extractions block the report instead of shipping

1. Record the replacement chain per clause: which amendment replaced which text, in order.

Expected: the operator sees the 2023 text and the Amendment 6 text as a linked history

Use this when

• An amendment replaced a clause and the agent still quotes the old language.
• Cached extractions survive amendments that should have invalidated them.
• IP assignment, confidentiality, or liability language looks pre-amendment in output.
• You are auditing cache correctness in a multi-amendment pipeline.

Not for this skill when

• The amendment only clarifies the clause without replacing it; the old extraction may still be valid.
• There are no amendments; the cache is fine.
• The clause text is identical before and after; re-extraction changes nothing.
• The question is what the clause means legally, not which version was extracted.

Variant phrasings

agent quoted superseded clause language after amendment

cached extraction not invalidated by amendment

Amendment 6 replaced the clause, agent used the old text

stale clause cache in contract review pipeline

Why it happens

Caches are keyed by (document, section) on the assumption that a section's text does not change. Amendments break that assumption by design: they replace section text without touching the base document. The cache key still hits, the old text still looks fresh, and nothing in the pipeline connects "Amendment 6 replaced Section 12" to "the cached Section 12 extraction is dead".

Edge cases

• The amendment replaces a section partially ("the second paragraph of Section 12 is replaced"). Invalidate at paragraph granularity, not section granularity.
• The amendment is later superseded by another amendment. The invalidation chain must follow effective-date order to land on the truly current text.
• The replacement text lives in an exhibit attached to the amendment. Ingest the exhibit as part of the amendment before re-extracting.
• The cache is shared across deals. Scope invalidation to the deal bundle; a Section 12 replacement in one MSA must not purge another deal's cache.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_qXlgsRjTAgex6qHLNI1Rrg