I just noticed this and it seems strange. CIS is not listed when I click Programs and Features in the Control Panel. It is listed in CCleaner’s installed programs list but with no version number. The first picture is of the Control Panel list and the second one is CCleaner’s.
In the past I have had CCleaner show two entries after a version update.
If you remove the wrong entry from CCleaner it also removes the only entry present in the Programs & Features.
I am not sure if that is what has happened to you.
The entry missing does not effect the program or the uninstaller in anyway.