diff --git a/Simulation/G4Atlas/G4AtlasAlg/python/G4AtlasAlgConfig.py b/Simulation/G4Atlas/G4AtlasAlg/python/G4AtlasAlgConfig.py
index 08495bec98e07487a2b16b16c568ec3c4ef4af37..f7868807bca4de8e16ec6371c722434976fb8050 100644
--- a/Simulation/G4Atlas/G4AtlasAlg/python/G4AtlasAlgConfig.py
+++ b/Simulation/G4Atlas/G4AtlasAlg/python/G4AtlasAlgConfig.py
@@ -51,7 +51,7 @@ def getG4AtlasAlg(name='G4AtlasAlg', **kwargs):
         is_hive = False
     kwargs.setdefault('MultiThreading', is_hive)
 
-    kwargs.setdefault('TruthRecordService', simFlags.TruthService.get_Value())
+    kwargs.setdefault('TruthRecordService', simFlags.TruthStrategy.TruthServiceName())
     kwargs.setdefault('GeoIDSvc', 'ISF_GeoIDSvc')
 
     ## G4AtlasAlg verbosities (available domains = Navigator, Propagator, Tracking, Stepping, Stacking, Event)
diff --git a/Simulation/ISF/ISF_Config/python/ISF_MainConfig.py b/Simulation/ISF/ISF_Config/python/ISF_MainConfig.py
index 40cb0a21b7c899a7e6ccfbc2180433076bba0c5e..e13ab125ff1c949bad1e6fe67293503d9befa5c5 100644
--- a/Simulation/ISF/ISF_Config/python/ISF_MainConfig.py
+++ b/Simulation/ISF/ISF_Config/python/ISF_MainConfig.py
@@ -186,7 +186,7 @@ def getKernel_GenericSimulator(name="ISF_Kernel_GenericSimulator", **kwargs):
     kwargs.setdefault("InputConverter", "ISF_InputConverter")
     kwargs.setdefault("ParticleBroker", "ISF_ParticleBrokerSvc")
     from G4AtlasApps.SimFlags import simFlags
-    kwargs.setdefault("TruthRecordService", simFlags.TruthService.get_Value())
+    kwargs.setdefault("TruthRecordService", simFlags.TruthStrategy.TruthServiceName())
     kwargs.setdefault("SimHitService", "ISF_SimHitService")
     kwargs.setdefault("MemoryMonitoringTool", "ISF_MemoryMonitor")
     kwargs.setdefault("DoCPUMonitoring", ISF_Flags.DoTimeMonitoring())
diff --git a/Simulation/ISF/ISF_Fatras/ISF_FatrasServices/python/ISF_FatrasServicesConfig.py b/Simulation/ISF/ISF_Fatras/ISF_FatrasServices/python/ISF_FatrasServicesConfig.py
index 15f21a18bed0be356e83ecd82b4a8b203b93df07..a9f6df915081fdbe637d3c454f87257e5ed14208 100644
--- a/Simulation/ISF/ISF_Fatras/ISF_FatrasServices/python/ISF_FatrasServicesConfig.py
+++ b/Simulation/ISF/ISF_Fatras/ISF_FatrasServices/python/ISF_FatrasServicesConfig.py
@@ -242,7 +242,7 @@ def getFatrasParticleDecayHelper(name="ISF_FatrasParticleDecayHelper", **kwargs)
     kwargs.setdefault("RandomStreamName"    , ISF_FatrasFlags.RandomStreamName())
     kwargs.setdefault("G4RandomStreamName"    , "FatrasG4") # TODO: read stream name "FatrasG4" from Fatras jobProperties
     kwargs.setdefault("ParticleBroker"  , getService('ISF_ParticleBrokerSvc'))
-    kwargs.setdefault("ParticleTruthSvc", simFlags.TruthService.get_Value())
+    kwargs.setdefault("ParticleTruthSvc", simFlags.TruthStrategy.TruthServiceName())
     kwargs.setdefault("PDGToG4ParticleConverter", getPublicTool('ISF_FatrasPdgG4Particle'))
     # the validation output
     kwargs.setdefault("ValidationMode"              , ISF_Flags.ValidationMode())
@@ -266,7 +266,7 @@ def getFatrasG4HadIntProcessor(name="ISF_FatrasG4HadIntProcessor", **kwargs):
     kwargs.setdefault("RandomNumberService" , simFlags.RandomSvc() )
     kwargs.setdefault("RandomStreamName"    , ISF_FatrasFlags.RandomStreamName())
     kwargs.setdefault("ParticleBroker"      , getService('ISF_ParticleBrokerSvc'))
-    kwargs.setdefault("TruthRecordSvc"      , simFlags.TruthService.get_Value())
+    kwargs.setdefault("TruthRecordSvc"      , simFlags.TruthStrategy.TruthServiceName())
     kwargs.setdefault("PhysicsValidationTool"       , getPublicTool('ISF_FatrasPhysicsValidationTool'))
     kwargs.setdefault('ValidationMode'      , ISF_Flags.ValidationMode())
     kwargs.setdefault("MomentumCut"        , FatrasTuningFlags.MomCutOffSec())
@@ -281,7 +281,7 @@ def getFatrasParametricHadIntProcessor(name="ISF_FatrasParametricHadIntProcessor
     kwargs.setdefault("RandomNumberService" , simFlags.RandomSvc() )
     kwargs.setdefault("RandomStreamName"    , ISF_FatrasFlags.RandomStreamName())
     kwargs.setdefault("ParticleBroker"      , getService('ISF_ParticleBrokerSvc'))
-    kwargs.setdefault("TruthRecordSvc"      , simFlags.TruthService.get_Value())
+    kwargs.setdefault("TruthRecordSvc"      , simFlags.TruthStrategy.TruthServiceName())
     kwargs.setdefault("HadronicInteractionScaleFactor"  , FatrasTuningFlags.HadronicInteractionProbabilityScalor())
     kwargs.setdefault("MinimumHadronicInitialEnergy"    , FatrasTuningFlags.MomCutOffSec())
     kwargs.setdefault("MinimumHadronicOutEnergy"        , FatrasTuningFlags.MomCutOffSec())
@@ -302,7 +302,7 @@ def getFatrasConversionCreator(name="ISF_FatrasConversionCreator", **kwargs):
     kwargs.setdefault("RandomNumberService" , simFlags.RandomSvc() )
     kwargs.setdefault("RandomStreamName"    , ISF_FatrasFlags.RandomStreamName())
     kwargs.setdefault("ParticleBroker"  , getService('ISF_ParticleBrokerSvc'))
-    kwargs.setdefault("TruthRecordSvc"  , simFlags.TruthService.get_Value())
+    kwargs.setdefault("TruthRecordSvc"  , simFlags.TruthStrategy.TruthServiceName())
     kwargs.setdefault("PhysicsValidationTool"       , getPublicTool('ISF_FatrasPhysicsValidationTool'))
     kwargs.setdefault("PhysicsProcessCode"              , 14) # TODO: to be taken from central definition
     kwargs.setdefault('ValidationMode'      , ISF_Flags.ValidationMode())
@@ -316,7 +316,7 @@ def getFatrasProcessSamplingTool(name="ISF_FatrasProcessSamplingTool", **kwargs)
     from G4AtlasApps.SimFlags import simFlags
     kwargs.setdefault( "RandomNumberService", simFlags.RandomSvc())
     # truth record
-    kwargs.setdefault("TruthRecordSvc"      , simFlags.TruthService.get_Value())
+    kwargs.setdefault("TruthRecordSvc"      , simFlags.TruthStrategy.TruthServiceName())
     # decays
     kwargs.setdefault("ParticleDecayHelper" , getPublicTool('ISF_FatrasParticleDecayHelper'))
     # photon conversion
@@ -402,7 +402,7 @@ def getFatrasMaterialUpdator(name="ISF_FatrasMaterialUpdator", **kwargs):
     kwargs.setdefault("RandomNumberService" , simFlags.RandomSvc() )
     kwargs.setdefault("RandomStreamName"    , ISF_FatrasFlags.RandomStreamName())
     kwargs.setdefault("ParticleBroker"              , getService('ISF_ParticleBrokerSvc'))
-    kwargs.setdefault("TruthRecordSvc"              , simFlags.TruthService.get_Value())
+    kwargs.setdefault("TruthRecordSvc"              , simFlags.TruthStrategy.TruthServiceName())
     # hadronic interactions
     kwargs.setdefault("HadronicInteraction"         , True)
     #kwargs.setdefault("HadronicInteractionProcessor", getPublicTool('ISF_FatrasParametricHadIntProcessor'))
@@ -438,7 +438,7 @@ def getFatrasMaterialEffectsEngine(name="ISF_FatrasMaterialEffectsEngine", **kwa
     kwargs.setdefault("RandomNumberService"         , simFlags.RandomSvc() )
     kwargs.setdefault("RandomStreamName"            , ISF_FatrasFlags.RandomStreamName())
     kwargs.setdefault("ParticleBroker"              , getService('ISF_ParticleBrokerSvc'))
-    kwargs.setdefault("TruthRecordSvc"              , simFlags.TruthService.get_Value())
+    kwargs.setdefault("TruthRecordSvc"              , simFlags.TruthStrategy.TruthServiceName())
     kwargs.setdefault("ProcessSamplingTool"         , getPublicTool('ISF_FatrasProcessSamplingTool'))
     kwargs.setdefault("ParticleDecayHelper"         , getPublicTool('ISF_FatrasParticleDecayHelper'))
     # energy loss
diff --git a/Simulation/ISF/ISF_Geant4/ISF_Geant4Tools/python/ISF_Geant4ToolsConfig.py b/Simulation/ISF/ISF_Geant4/ISF_Geant4Tools/python/ISF_Geant4ToolsConfig.py
index 087fe518e9617030cd63b4d4d5fdd1102868ef6a..ff4eab490d75dac803132f0e32c318e827fbc93f 100644
--- a/Simulation/ISF/ISF_Geant4/ISF_Geant4Tools/python/ISF_Geant4ToolsConfig.py
+++ b/Simulation/ISF/ISF_Geant4/ISF_Geant4Tools/python/ISF_Geant4ToolsConfig.py
@@ -7,7 +7,7 @@ from AthenaCommon import CfgMgr
 
 def getMCTruthUserActionTool(name='ISFMCTruthUserActionTool', **kwargs):
     from G4AtlasApps.SimFlags import simFlags
-    kwargs.setdefault('TruthRecordSvc',  simFlags.TruthService.get_Value())
+    kwargs.setdefault('TruthRecordSvc',  simFlags.TruthStrategy.TruthServiceName())
     return CfgMgr.G4UA__iGeant4__MCTruthUserActionTool(name, **kwargs)
 
 def addMCTruthUserActionTool(name="ISFMCTruthUserActionTool",system=False):