diff --git a/metricflow/model/semantics/linkable_spec_resolver.py b/metricflow/model/semantics/linkable_spec_resolver.py
index 61541666b9..ad48a54430 100644
--- a/metricflow/model/semantics/linkable_spec_resolver.py
+++ b/metricflow/model/semantics/linkable_spec_resolver.py
@@ -120,8 +120,14 @@ def element_name(self) -> str:  # noqa: D102
         return self.reference.element_name
 
     @property
-    def path_key(self) -> ElementPathKey:  # noqa: D102
-        return ElementPathKey(element_name=self.element_name, entity_links=self.join_path.entity_links)
+    def path_key(self) -> ElementPathKey:
+        """Key that can uniquely identify an element and the joins used to realize the element.
+
+        Use qualified name to guarantee uniqueness.
+        """
+        return ElementPathKey(
+            element_name=self.as_group_by_metric_spec.qualified_name, entity_links=self.join_path.entity_links
+        )
 
     @property
     def reference(self) -> MetricReference:  # noqa: D102
@@ -142,6 +148,15 @@ def metric_subquery_entity_links(self) -> Tuple[EntityReference, ...]:
         metric_subquery = self.join_path.metric_subquery_join_path_element
         return metric_subquery.entity_links + (metric_subquery.join_on_entity,)
 
+    @property
+    def as_group_by_metric_spec(self) -> GroupByMetricSpec:
+        """Convert LinkableMetric to GroupByMetricSpec."""
+        return GroupByMetricSpec(
+            element_name=self.element_name,
+            entity_links=self.join_path.entity_links,
+            metric_subquery_entity_links=self.metric_subquery_entity_links,
+        )
+
 
 @dataclass(frozen=True)
 class LinkableElementSet: