diff --git a/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimServices/src/FastCaloSimV2Tool.cxx b/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimServices/src/FastCaloSimV2Tool.cxx
index ebe953d79fa7f91ac3c40479dbf1f3da5409c08b..f4f5746ff8236ce42cdacd25ba8506c98037733e 100644
--- a/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimServices/src/FastCaloSimV2Tool.cxx
+++ b/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimServices/src/FastCaloSimV2Tool.cxx
@@ -226,6 +226,10 @@ StatusCode ISF::FastCaloSimV2Tool::simulate(ISF::ISFParticle& isfp, ISFParticleC
ISF::fKillsPrimary);
m_truthRecordSvc->registerTruthIncident( truth, true );
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
for (auto *secondary : *someSecondaries) {
if (secondary->getTruthBinding()) {
diff --git a/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/HadIntProcessorParametric.cxx b/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/HadIntProcessorParametric.cxx
index 1f93510737a2a68a61b16d9896d0a89381f1a9b2..f36edd9da0f6e42991e977078a895da78ebb3b93 100644
--- a/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/HadIntProcessorParametric.cxx
+++ b/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/HadIntProcessorParametric.cxx
@@ -645,6 +645,10 @@ ISF::ISFParticleVector iFatras::HadIntProcessorParametric::getHadState(const ISF
parent->nextGeoID(),
ISF::fKillsPrimary );
m_truthRecordSvc->registerTruthIncident( truth);
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
// save info for validation
if (m_validationMode && m_validationTool) {
diff --git a/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/McMaterialEffectsUpdator.cxx b/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/McMaterialEffectsUpdator.cxx
index 25ff6551ef6796803d196bd2045303c1a6b6258b..977edf45c694d3072290a50e1011dbe0fb988a29 100644
--- a/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/McMaterialEffectsUpdator.cxx
+++ b/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/McMaterialEffectsUpdator.cxx
@@ -1316,6 +1316,11 @@ void iFatras::McMaterialEffectsUpdator::recordBremPhoton(double time,
parent->nextGeoID(),
ISF::fPrimarySurvives );
m_truthRecordSvc->registerTruthIncident( truth);
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
+
//Making sure we get some correct truth info from parent if needed before pushing into the particle broker
if (!bremPhoton->getTruthBinding()) {
bremPhoton->setTruthBinding(new ISF::TruthBinding(*parent->getTruthBinding()));
@@ -1449,6 +1454,10 @@ void iFatras::McMaterialEffectsUpdator::recordBremPhotonLay(const ISF::ISFPartic
parent->nextGeoID(),
ISF::fPrimarySurvives );
m_truthRecordSvc->registerTruthIncident( truth);
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
//Making sure we get some correct truth info from parent if needed before pushing into the particle broker
if (!bremPhoton->getTruthBinding()) {
@@ -1576,6 +1585,10 @@ iFatras::McMaterialEffectsUpdator::interact(double time,
parent->nextGeoID(), // inherits from the parent
ISF::fKillsPrimary );
m_truthRecordSvc->registerTruthIncident( truth);
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
// save info for validation
if (m_validationMode && m_validationTool) {
@@ -1644,6 +1657,10 @@ iFatras::McMaterialEffectsUpdator::interact(double time,
parent->nextGeoID(), // inherits from the parent
ISF::fPrimarySurvives );
m_truthRecordSvc->registerTruthIncident( truth);
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
// push child particles onto stack
m_particleBroker->push( children[0], parent);
@@ -1765,6 +1782,10 @@ ISF::ISFParticleVector iFatras::McMaterialEffectsUpdator::interactLay(const ISF
parent->nextGeoID(), // inherits from the parent
ISF::fPrimarySurvives );
m_truthRecordSvc->registerTruthIncident( truth);
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
// save info for validation
if (m_validationMode && m_validationTool) {
@@ -1845,6 +1866,10 @@ ISF::ISFParticleVector iFatras::McMaterialEffectsUpdator::interactLay(const ISF
parent->nextGeoID(), // inherits from the parent
ISF::fKillsPrimary );
m_truthRecordSvc->registerTruthIncident( truth);
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
// save info for validation
if (m_validationMode && m_validationTool) {
diff --git a/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/PhotonConversionTool.cxx b/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/PhotonConversionTool.cxx
index 528ad9ca62150995491b2a6bb27072f1dc716773..8ef54b10de9cdbacdcebe7126e57d93497724bc1 100755
--- a/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/PhotonConversionTool.cxx
+++ b/Simulation/ISF/ISF_Fatras/ISF_FatrasTools/src/PhotonConversionTool.cxx
@@ -307,6 +307,10 @@ void iFatras::PhotonConversionTool::recordChilds(double time,
parent->nextGeoID(),
ISF::fKillsPrimary );
m_truthRecordSvc->registerTruthIncident( truth);
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
// save info for validation
if (m_validationMode && m_validationTool) {
@@ -388,6 +392,10 @@ ISF::ISFParticleVector iFatras::PhotonConversionTool::getChilds(const ISF::ISFPa
parent->nextGeoID(),
ISF::fKillsPrimary );
m_truthRecordSvc->registerTruthIncident( truth);
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
//Make sure the conversion products get a chance to have correct truth info before pushing into the particle broker
// FIXME Check this doesn't cause problems later in the TruthSvc
diff --git a/Simulation/ISF/ISF_Fatras/ISF_FatrasToolsG4/src/G4ParticleDecayHelper.cxx b/Simulation/ISF/ISF_Fatras/ISF_FatrasToolsG4/src/G4ParticleDecayHelper.cxx
index ca606257cab89078c2faed019c988329ec6695c4..9ac2371e96f0230c12f698b256881797412e7c1b 100644
--- a/Simulation/ISF/ISF_Fatras/ISF_FatrasToolsG4/src/G4ParticleDecayHelper.cxx
+++ b/Simulation/ISF/ISF_Fatras/ISF_FatrasToolsG4/src/G4ParticleDecayHelper.cxx
@@ -248,12 +248,15 @@ void iFatras::G4ParticleDecayHelper::handleDecayParticles(const ISF::ISFParticle
// register TruthIncident
ISF::ISFTruthIncident truth( const_cast<ISF::ISFParticle&>(particle),
- decayProducts,
- process,
- particle.nextGeoID(), // inherits from the parent
- ISF::fKillsPrimary );
+ decayProducts,
+ process,
+ particle.nextGeoID(), // inherits from the parent
+ ISF::fKillsPrimary );
m_truthRecordSvc->registerTruthIncident( truth);
-
+ // At this point we need to update the properties of the
+ // ISFParticles produced in the interaction
+ truth.updateParentAfterIncidentProperties();
+ truth.updateChildParticleProperties();
// save info for validation
if (m_validationMode && m_validationTool) {
Amg::Vector3D* nMom = 0;