Fix pb with persistence of "light" modules: SaveAs operation leads to loss of non-loaded "light" modules data.
Fix pb with persistence of "light" modules: SaveAs operation leads to loss of non-loaded "light" modules data.

FedoraScientific/salome-kernel,FedoraScientific/salome-kernel,FedoraScientific/salome-kernel,FedoraScientific/salome-kernel