Some options of Visual Studio are saved (ie. debugging command) and others not(see next). In particular General>“Platform Set” and C++>Code Generation>“Run time library” are not saved and we have to set them each time that the .jucer file is modified (for instance to change the version of the plugin). It would be extremely useful that they were preserved…
They are not saved as you can set the Runtime library within the Projucer. Simply change the runtime library in the Projucer and not within VS.