diff --git a/Simulation/G4Atlas/G4AtlasTests/share/postInclude.SplitSG_FCpileup.py b/Simulation/G4Atlas/G4AtlasTests/share/postInclude.SplitSG_FCpileup.py
new file mode 100644
index 0000000000000000000000000000000000000000..d92fc8d2f08cdf4758da04db94194ab17fdd718d
--- /dev/null
+++ b/Simulation/G4Atlas/G4AtlasTests/share/postInclude.SplitSG_FCpileup.py
@@ -0,0 +1,115 @@
+# Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
+
+# Updates the `AthAlgTool::EvtStore` property of `SimTestToolBase`
+# objects to point at the correct store when running full chain (e.g.
+# FastChain_tf.py) transforms with pile-up.
+# Adapted from `postInclude.DCubeTest_FCpileup.py`.
+
+from AthenaCommon import CfgGetter
+from G4AtlasApps.SimFlags import simFlags
+from AthenaCommon.DetFlags import DetFlags
+from AthenaCommon.AlgSequence import AlgSequence
+from AthenaCommon.AppMgr import ServiceMgr
+if not hasattr(ServiceMgr, 'THistSvc'):
+    from GaudiSvc.GaudiSvcConf import THistSvc
+    ServiceMgr += THistSvc("THistSvc")
+ServiceMgr.THistSvc.Output += ["truth DATAFILE='truth.root' OPT='RECREATE'"]
+
+
+# note: some of these tests will need an active DetDescrManager
+#       so please use something like
+#             preExec='simFlags.ReleaseGeoModel=False;'
+#       with your transform
+job = AlgSequence()
+
+if not hasattr(job, 'G4TestAlg'):
+    from G4AtlasTests.G4AtlasTestsConf import G4TestAlg
+    job += G4TestAlg()
+simFlags.ReleaseGeoModel = False
+
+# "new" SG key
+newSG = "OriginalEvent_SG"
+
+if DetFlags.Truth_on():
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("TruthTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "EvgenTruthTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "PileupTruthTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "PileupEvgenTruthTestTool", checkType=True)]
+if DetFlags.pixel_on():
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("PixelHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['PixelHitsTestTool'].EvtStore = newSG
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "PileupPixelHitsTestTool", checkType=True)]
+if DetFlags.SCT_on():
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("SCT_HitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['SCT_HitsTestTool'].EvtStore = newSG
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "PileupSCT_HitsTestTool", checkType=True)]
+if DetFlags.TRT_on():
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("TrtHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['TrtHitsTestTool'].EvtStore = newSG
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "PileupTrtHitsTestTool", checkType=True)]
+if DetFlags.LAr_on():
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("EMBHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['EMBHitsTestTool'].EvtStore = newSG
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("EMECHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['EMECHitsTestTool'].EvtStore = newSG
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("FCALHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['FCALHitsTestTool'].EvtStore = newSG
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("HECHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['HECHitsTestTool'].EvtStore = newSG
+    if DetFlags.Truth_on():
+        job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+            "CaloEntryLayerTestTool", checkType=True)]
+if DetFlags.Tile_on():
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("TileHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['TileHitsTestTool'].EvtStore = newSG
+if simFlags.CalibrationRun.get_Value() == 'LAr+Tile':
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "LArActiveCaloCalibHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "LArInactiveCaloCalibHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "TileActiveCellCaloCalibHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "TileInactiveCellCaloCalibHitsTestTool", checkType=True)]
+if DetFlags.Muon_on():
+    job.G4TestAlg.SimTestTools += [
+       CfgGetter.getPrivateTool("MDTHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['MDTHitsTestTool'].EvtStore = newSG
+    job.G4TestAlg.SimTestTools += [
+       CfgGetter.getPrivateTool("RPCHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['RPCHitsTestTool'].EvtStore = newSG
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("CSCHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['CSCHitsTestTool'].EvtStore = newSG
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("TGCHitsTestTool", checkType=True)]
+    job.G4TestAlg.SimTestTools['TGCHitsTestTool'].EvtStore = newSG
+    if DetFlags.Truth_on():
+        job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+            "MuonEntryLayerTestTool", checkType=True)]
+        job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+            "MuonExitLayerTestTool", checkType=True)]
+if DetFlags.Lucid_on():
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("LucidHitsTestTool", checkType=True)]
+if DetFlags.ALFA_on():
+    job.G4TestAlg.SimTestTools += [CfgGetter.getPrivateTool(
+        "ALFA_SimHitsTestTool", checkType=True)]
+if DetFlags.ZDC_on():
+    job.G4TestAlg.SimTestTools += [
+        CfgGetter.getPrivateTool("ZDCHitsTestTool", checkType=True)]