I've just upgrade to MT 4.261 from MT3.2 and am trying to get used to the new forms. If one is on the Comment Settings page and one sets a CAPTCHA provider and then one clicks Save Changes does the change take effect immediately?
Also, on the Comments Settings page there's a Commenting Policy entry "Immediately approve comments from". If you want to require a CAPTCHA entry do you say "No one" or is it more correct to say "Anyone" since maybe a different layer enforces CAPTCHA checking?
I read here:
http://www.movabletype.org/documentation/administrator/managing-blogs/settings/comment-settings.html
and it sounds like "Immediately Approve Comments" sounds like it controls whether to hold back a comment for moderation. So then is CAPTCHA usage controlled by template syntax only? Or by template syntax plus selecting a "CAPTCHA Provider"?
Reported on Movable Type 4.2

I do not think that clicking Publish is required to get a lot of the settings for spam control and other comments rules to take effect. Save appears to be enough.