  We study the correlation between the distributions of the net-charge,
net-kaon, net-baryon and net-proton number at hadronization and after the final
hadronic decoupling by simulating ultra relativistic heavy ion collisions with
the hybrid version of the ultrarelativistic quantum molecular dynamics (UrQMD)
model. We find that due to the hadronic rescattering these distributions are
not strongly correlated. The calculated change of the correlation, during the
hadronic expansion stage, does not support the recent paradigm, namely that the
measured final moments of the experimentally observed distributions do give
directly the values of those distributions at earlier times, when the system
had been closer to the QCD crossover.
