Can anyone please tell me if CCleaner erases search index?

I love CCleaner and I've been using it for years since XP.

Now I got a Windows 7 computer so I'm using search index.

Is it just me or does CCleaner erase search index data?

What do I have to uncheck to get it to stop doing this?

Also I suggest there be a separate checkbox for this.

Thank you for any help, gentlemen.