I have been using CCleaner since the first beta so I have always updated and upgraded over the previous one. Few time I have installed it in a new PC. Yesterday I did it and noticed the optimization cookies cleaning feature. But I don't have a way to rescan my cookies to optimize the cleaning avoiding to close my most important sessions (fe. emails). I know you can do this manually in the Cookies section but is very annoying and complex if you have tons of cookies.
I see this option super useful for maintenance cleaning but sometimes this feature should be disabled to solve browser problems like corrupted cookies information (happens very much when for example Hotmail/Gmail update their server side apps)
So my suggestion is to include a button to rescan and reoptimize the cookies cleaning in the Cookies section of CCleaner and an option to enable/disable this optimization in settings.