Settings for the Center Channel Extractor effect are not saved when you save you project. Re-opening the project shows that affect has reset to defaults. My work around is to save a preset with my settings and each time I open my project I need to remember to re-apply my preset. I was fine with this workaround until I now have need to use Center Channel Extractor on 10 Tracks. So, how I have 10 presets for that effect and every time I open my project I have to go through and set my presets for that effect for the 10 Tracks.