diff --git a/yaml/duplex.yaml b/yaml/duplex.yaml
index 7e5e3d8..bffd783 100644
--- a/yaml/duplex.yaml
+++ b/yaml/duplex.yaml
@@ -28,8 +28,12 @@ operations:
     space: A102
     part: ifc/duplex_modified.ifc
     output: ifc/duplex_merge.ifc
-  - name: History
+  - name: WriteHistory
     command: history
-    yaml_src: yaml/duplex.yaml
+    write_psets: true
+  - name: ReadHistory
+    command: history
+    input: ifc/duplex_merge.ifc
+    output: ifc/history.json
 
 dest: ifc/duplex_merge.ifc