Thank you for your response. Not quite the answer I had hoped for, but I’m willing to try anything.
I think my least worse option is to convert the current single project with multiple targets into multiple projects, each with a single target – if that will make the advanced IntelliSense features work!
I think this might need a common source directory with separate sub-directories for each of the CMakeLists.txt and ./build subdirectories.
I’ll give it a try ( after backing up my entire hard drive ).
Thanks again.