Magic fluid transformation

In the model ThermoSysPro/Examples/Book/PowerPlants/ConcentratedSolarPowerPlant_PTSC.mo some strange fluid transformations occur.

The heat exchangers on the Oil loop are modeled with the Solar package which provides properties for the oil: fine. However these heat exchangers are then connected to a tank and some other components (pressure losses...) which are issued from the WaterSteam package. The fluid than change from oil to water and then back to oil... which is magic (even if some density values are entered by hand and may correspond to proper oil density).

This may also explain why taking the initialization values from this model does not allow to easily start the Fluid one.