Consequences of changing configuration

@cahrens , @explorerleslie , @gwprice , @zhkramer , @srpearce : last big chunk, let me know what I've gotten wrong and what I've forgotten!
I wouldn't say it is possible to save a change to an auto cohort group name... that isn't what you are doing. You are just creating new auto cohort groups. Perhaps "it is possible to change the value of auto_cohort_groups in the **Advanced Settings" page in Studio. However, doing so does not result in any of the previously defined auto_cohort_groups changing their names. Instead, changing a value...