If I have a project that is set to use TI Arm Clang and I change it to use the older TI Arm Compiler we seem to lose all settings. And by all I don't just mean compiler options.

Product dependencies are lost. i.e. if the project had a dependency setup for an SDK and SysConfig that is gone.

SysConfig options are cleared.

User compiler and linker options are gone. While it is understood that some options may not migrate, even ones that are the same between the tool chains (i.e. include) are lost.