Do I have to do anything special to keep CC Cleaner from removing stored usernames and passwords for I.E. Firefox, and Google browsers?
I’d like to run the recommended cleaning but afraid I’ll be screwed if I do…an ounce of prevention is worth a pound of cure.
The first thing I do when trying out a new app is look into its available command buttons and typed text (usually near the top of the app) and find the Options command and see if there's anything I can change within its Options' checkbox parameters.
You need to configure which cookies to keep first, since if you don't it will delete all cookies for your preferred logins, see here:
https://www.piriform.com/docs/ccleaner/ccleaner-settings/choosing-which-cookies-to-keep/