diff --git a/src/algorithms/tracking/TrackParamTruthInit.cc b/src/algorithms/tracking/TrackParamTruthInit.cc
index 35ab17917b..75ebd247d3 100644
--- a/src/algorithms/tracking/TrackParamTruthInit.cc
+++ b/src/algorithms/tracking/TrackParamTruthInit.cc
@@ -39,9 +39,11 @@ void TrackParamTruthInit::process(const Input& input, const Output& output) cons
   // Loop over input particles
   for (const auto& mcparticle : *mcparticles) {
 
-    // accept generator-stable particles (HepMC3/DDSim gun) or Geant4-produced
-    // secondaries; reject generator intermediates (partons, resonances, beams)
-    if (!(mcparticle.getGeneratorStatus() == 1 || mcparticle.getSimulatorStatus() != 0)) {
+    // Accept all generated particles that been transported in simulation.
+    // Both primary / decayed signal or beam background particles can produce truth seeds.
+    // SimulatorStatus will stay 0 for intermediate partons, resonances, or any particles
+    // that are not transported in simulation hence have no chance to leave hits.
+    if (mcparticle.getSimulatorStatus() == 0) {
       trace("ignoring particle with generatorStatus = {}, simulatorStatus = {}",
             mcparticle.getGeneratorStatus(), mcparticle.getSimulatorStatus());
       continue;