diff --git a/control-pipeline/services/decomposition_pass.py b/control-pipeline/services/decomposition_pass.py
index c2ab229..998c52b 100644
--- a/control-pipeline/services/decomposition_pass.py
+++ b/control-pipeline/services/decomposition_pass.py
@@ -3543,12 +3543,12 @@ class DecompositionPass:
             FROM obligation_candidates oc
             JOIN canonical_controls cc ON cc.id = oc.parent_control_uuid
             WHERE oc.release_state = 'validated'
+              AND oc.merged_into_id IS NULL
               AND NOT EXISTS (
                   SELECT 1 FROM canonical_controls ac
                   WHERE ac.parent_control_uuid = oc.parent_control_uuid
                     AND ac.decomposition_method = 'pass0b'
-                    AND ac.release_state NOT IN ('deprecated', 'duplicate')
-                    AND ac.title LIKE '%' || LEFT(oc.action, 20) || '%'
+                    AND ac.release_state NOT IN ('deprecated')
               )
         """
         if limit > 0: