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The short answer
Evaluate graph-index updates by tracing a changed source through entities, relationships, communities, reports, and query results. A current source record does not prove every derived artifact stopped expressing the previous fact.
What to take away
- Map dependencies before changing sources.
- Test stale relationships and reports.
- Keep update and full-rebuild controls.
Sources checked . Research synthesis and Rubrex recommendations. Examples and local experiments are labeled; they are not client results.
Use the documented dataflow as a dependency map
GraphRAG’s indexing documentation describes entities, relationships, community reports, and embeddings as derived stages. This guide uses that dependency structure to design an update test; it does not claim a specific unverified incremental-update command. Record which operations your pinned deployment actually supports. Define the intended searchable state after an edit or deletion and identify every artifact that can still expose the old relationship. Include cached query contexts when they participate in the application path.
Evidence: GraphRAG indexing overview [1]GraphRAG default dataflow [2]
Author a relationship-change fixture
Create fictional source records showing that Team Atlas maintains Service Red. Warm a query that asks for the maintainer. Then revise the approved source so Team Birch maintains the service and Atlas is no longer responsible. The expected current answer names Birch with applicable evidence. Preserve the previous snapshot for historical questions. The fixture should detect a corrected edge paired with an old entity description or community report that still names Atlas as the current maintainer.
Check each affected representation
Inspect source revision, extracted entities, relationship endpoints and descriptions, community membership where relevant, generated reports, and vector-search results. Compare those observations with the declared expected state. A full rebuild can serve as a diagnostic control when supported, but it should not conceal a failed incremental path that production still uses. Record which artifacts were explicitly refreshed and which were reused. If internal lineage is unavailable, state the limit and test the observable outputs rather than asserting hidden consistency.
Test removals and identity changes
Add a deleted relationship and an entity rename to the controlled fixture. Verify that stale aliases or summaries cannot resurrect a removed claim through another route. Distinguish historical evidence retained for as-of questions from evidence eligible for current answers. If permissions change without content changes, include that event as a separate boundary test. The update procedure must not assume that identical source text implies identical eligibility or that a graph path remains valid after one supporting relationship disappears.
Set a bounded consistency decision
Define when the application may serve the updated graph and how it behaves while artifacts are inconsistent. Test any fallback to original passages, prior snapshots, or explicit uncertainty rather than improvising during a failed update. Keep the change manifest, affected artifact IDs, observed stale claims, and retest results together. Promote a new update workflow only after the critical current and historical questions behave as intended. That evidence is more useful than a successful indexing exit status without inspected answers. Check a question unaffected by the changed relationship as a control. It should remain answerable without gaining new unsupported connections during artifact regeneration.
Limits of the evidence
This is a dependency-based update test plan, not an executed GraphRAG run or a claim about a particular version’s incremental-update API or consistency guarantees.
Common questions
Does an updated edge mean the answer is current?
Not necessarily. Derived descriptions, community reports, embeddings, or caches may still expose the previous fact.
Can a full rebuild be the control?
Yes, when supported, but document it separately from the actual update workflow being evaluated.
Sources & further reading
Primary sources behind this briefing. A source’s findings apply to its own study conditions; publication on arXiv does not establish peer review.
- GraphRAG indexing overview Microsoft GraphRAG · Living reference · Maintained documentationReviewed: index stages and derived graph artifacts. Accessed October 16, 2026.
- GraphRAG default dataflow Microsoft GraphRAG · Living reference · Maintained documentationReviewed: entities, relationships, communities, reports and text-unit dataflow. Accessed October 16, 2026.
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