diff --git a/docsgpt/retriever/dispatcher.py b/docsgpt/retriever/dispatcher.py
index a14fc02f..31cc75e0 100644
--- a/docsgpt/retriever/dispatcher.py
+++ b/docsgpt/retriever/dispatcher.py
@@ -185,12 +185,23 @@ class Dispatcher(BaseRetriever):
         score_threshold / rephrase_query) plus an opted-in prescreen config; a
         source left at defaults takes the global path so all-classic retrieval
         stays byte-identical with zero extra LLM calls.
+
+        A graph source's ``graph`` options count too: they are read from the
+        per-source config this records, so a source that changes only those
+        would otherwise run the defaults and the options would do nothing.
+        They mean nothing to any other retriever, so they only count for
+        ``graphrag`` -- an override hands the source its own chunk budget as
+        well, which a classic source must not pick up from a graph setting.
         """
         return (
             retrieval.chunks != _DEFAULT_RETRIEVAL.chunks
             or retrieval.score_threshold != _DEFAULT_RETRIEVAL.score_threshold
             or retrieval.rephrase_query != _DEFAULT_RETRIEVAL.rephrase_query
             or retrieval.prescreen is not None
+            or (
+                (retrieval.retriever or "").lower() == "graphrag"
+                and retrieval.graph != _DEFAULT_RETRIEVAL.graph
+            )
         )
 
     @staticmethod
diff --git a/tests/test_dispatcher.py b/tests/test_dispatcher.py
index 18816aa1..050664c1 100644
--- a/tests/test_dispatcher.py
+++ b/tests/test_dispatcher.py
@@ -74,6 +74,35 @@ class TestDispatcherGrouping:
         assert "b" not in retrievals
 
 
+    def test_graph_options_count_as_an_override(self, _patch_llm_creator):
+        """A graph source that changes only its graph options still needs its
+        config carried over: those options live on the per-source retrieval the
+        Dispatcher hands the retriever, so without this the UI toggles are
+        no-ops and every source runs the defaults."""
+        sources = [
+            {
+                "id": "a",
+                "retrieval": RetrievalConfig(
+                    retriever="graphrag", graph={"seed_strategy": "relationships"}
+                ),
+            },
+            {"id": "b", "retrieval": RetrievalConfig(retriever="graphrag")},
+        ]
+        d = Dispatcher(source={"question": "q", "active_docs": ["a", "b"]}, sources=sources)
+        retrievals = d._groups[0]["retrievals"]
+        assert "a" in retrievals
+        assert retrievals["a"].graph.seed_strategy == "relationships"
+        # A source on the defaults still takes the shared path.
+        assert "b" not in retrievals
+
+    def test_graph_options_on_a_classic_source_are_not_an_override(self, _patch_llm_creator):
+        # They only mean anything to the graph retriever; treating them as an
+        # override would hand a classic source its own chunk budget.
+        sources = [{"id": "a", "retrieval": RetrievalConfig(graph={"blend_vector": False})}]
+        d = Dispatcher(source={"question": "q", "active_docs": ["a"]}, sources=sources)
+        assert d._groups[0]["retrievals"] == {}
+
+
 @pytest.mark.unit
 class TestDispatcherSharedBudget:
     def test_single_group_full_budget(self, _patch_llm_creator):