You can check in the Tecnomatix.NET.chm in the What's New section:
Use the LoadDataFromFile or LoadLineSimulationDataFromFile methods of ITxOfflineGlobalServicesProvider to load a psz file in Process Simulate Standalone. To save the changes to a loaded psz file, call to the SaveDataToFile method. The same functionality is also available on Process Simulate on eMServer platform – refer to the LoadDataFromFile, LoadLineSimulationDataFromFile and SaveDataToFile methods of the ITxEmsGlobalServicesProvider interface. It is now possible to get the full path of the currently loaded data file (psz, psz-tc or cell) using the FinalDestination property of the TxDocument class.