Features- "refresh" arrows

I’m wondering what exactly is the function/difference of/between the refresh /reload/regenerate/update arrows next to each feature name vs. the one on the bottom of the dialog window.

I’m a bit puzzled, since I “refresh” the languagesystems feature and some languages get taken away, and when I “refresh” the whole features dialog they get added back in.

I fixed this. Thanks for reporting.

Thanks, George!