diff --git a/router/query_classifier.py b/router/query_classifier.py
index 6a244ef..281229b 100644
--- a/router/query_classifier.py
+++ b/router/query_classifier.py
@@ -87,6 +87,10 @@ def classify_query_for_route(
         "chain",
         "why",
         "subconto3",
+        "проводк",
+        "источник регистра",
+        "строк",
+        "субконто",
         "supplier",
         "поставщик",
         "buyer",
@@ -132,9 +136,10 @@ def classify_query_for_route(
     ranking_markers = ["рейтинг", "ranking", "топ", "top"]
     anomaly_markers = ["аномал", "summary", "срез", "risk-slice", "риск-срез"]
 
-    needs_exact_object_trace = _contains_any(text, exact_markers) and (
-        question_class in {"drilldown_explain", "simple_factual", "cross_entity"}
-    )
+    has_exact_marker = _contains_any(text, exact_markers)
+    needs_exact_object_trace = has_exact_marker and question_class in {"drilldown_explain", "simple_factual"}
+    if question_class == "cross_entity" and has_exact_marker and ("->" in text or "цепочка:" in text):
+        needs_exact_object_trace = True
     if _contains_any(text, inventory_markers) and question_class in {
         "drilldown_explain",
         "simple_factual",
diff --git a/tests/test_router_decision_flags.py b/tests/test_router_decision_flags.py
index 4c52f27..9d6f037 100644
--- a/tests/test_router_decision_flags.py
+++ b/tests/test_router_decision_flags.py
@@ -31,6 +31,17 @@ def test_classifier_drilldown_exact_trace_flags() -> None:
     assert flags.needs_runtime_truth is True
 
 
+def test_classifier_single_posting_drilldown_prefers_exact_trace() -> None:
+    flags = classify_query_for_route(
+        "Почему проводка на этот счет?",
+        {"question_class": "drilldown_explain"},
+        _store_meta(),
+    )
+    assert flags.needs_exact_object_trace is True
+    assert flags.needs_causal_chain is True
+    assert flags.needs_runtime_truth is True
+
+
 def test_classifier_cross_entity_causal_flags() -> None:
     flags = classify_query_for_route(
         "Свяжи контрагентов, договоры и проводки",
@@ -42,6 +53,17 @@ def test_classifier_cross_entity_causal_flags() -> None:
     assert flags.needs_exact_object_trace is False
 
 
+def test_classifier_cross_entity_buyer_documents_stays_hybrid_shape() -> None:
+    flags = classify_query_for_route(
+        "Свяжи документы покупателей и проводки",
+        {"question_class": "cross_entity"},
+        _store_meta(),
+    )
+    assert flags.needs_cross_entity_join is True
+    assert flags.needs_causal_chain is True
+    assert flags.needs_exact_object_trace is False
+
+
 def test_classifier_inventory_stock_provenance_flags() -> None:
     flags = classify_query_for_route(
         "От какого поставщика куплен товар Диван трехместный из текущего остатка на складе Основной склад",