I just uninstalled CCleaner to download new version and install that. Then I noticed that my settings such as which cookies to keep were gone.
I think that it would be good that when I uninstall CCleaner, it ask me if I wish to keep the settings file so that when I install it again, I wont have to specify yet again which cookies to keep.
If the CCleaner settings can be saved to an INI file, that would be useful. Or even a method to "Save Settings..." and choose as a registry backup or ini file. INI's are a lot safer though.
That's one reason why I just over-install newer versions, hence the settings remain intact.
It would be nice if CCleaner could export the settings to a .reg file just like WinRAR does, and if doing a clean install it could recognise that .reg file and automatically import it again just like WinRAR does.