diff --git a/py/metadata_collector/metadata_registry.py b/py/metadata_collector/metadata_registry.py
index 6e33e806..528f996a 100644
--- a/py/metadata_collector/metadata_registry.py
+++ b/py/metadata_collector/metadata_registry.py
@@ -196,9 +196,11 @@ class MetadataRegistry:
                     node_metadata[category] = {}
                 node_metadata[category][node_id] = current_metadata[category][node_id]
         
-        # Save to cache if we have any metadata for this node
+        # Save new metadata or clear stale cache entries when metadata is empty
         if any(node_metadata.values()):
             self.node_cache[cache_key] = node_metadata
+        else:
+            self.node_cache.pop(cache_key, None)
     
     def clear_unused_cache(self):
         """Clean up node_cache entries that are no longer in use"""
diff --git a/tests/metadata_collector/test_metadata_collector.py b/tests/metadata_collector/test_metadata_collector.py
index 3663f2a9..d53b1a40 100644
--- a/tests/metadata_collector/test_metadata_collector.py
+++ b/tests/metadata_collector/test_metadata_collector.py
@@ -124,3 +124,40 @@ def test_metadata_registry_caches_and_rehydrates(populated_registry):
 
     registry.clear_metadata("promptA")
     assert "promptA" not in registry.prompt_metadata
+
+
+def test_lora_manager_cache_updates_when_loras_removed(metadata_registry):
+    import nodes
+
+    class LoraManagerLoader:  # type: ignore[too-many-ancestors]
+        __name__ = "LoraManagerLoader"
+
+    nodes.NODE_CLASS_MAPPINGS["LoraManagerLoader"] = LoraManagerLoader
+
+    prompt_graph = {
+        "lora_node": {"class_type": "LoraManagerLoader", "inputs": {}},
+    }
+    prompt = SimpleNamespace(original_prompt=prompt_graph)
+    cache_key = "lora_node:LoraManagerLoader"
+
+    metadata_registry.start_collection("prompt1")
+    metadata_registry.set_current_prompt(prompt)
+    metadata_registry.record_node_execution(
+        "lora_node",
+        "LoraManagerLoader",
+        {"loras": [[{"name": "foo", "strength": 0.8, "active": True}]]},
+        None,
+    )
+    assert cache_key in metadata_registry.node_cache
+
+    metadata_registry.start_collection("prompt2")
+    metadata_registry.set_current_prompt(prompt)
+    metadata_registry.record_node_execution("lora_node", "LoraManagerLoader", {"loras": [[]]}, None)
+
+    assert cache_key not in metadata_registry.node_cache
+
+    metadata_registry.start_collection("prompt3")
+    metadata_registry.set_current_prompt(prompt)
+    metadata = metadata_registry.get_metadata("prompt3")
+
+    assert "lora_node" not in metadata[LORAS]