[cookies to delete]

I am using CCleaner and happy about it, except for one feature.

In the 'options-cookies-cookies to delete', I have moved the cookies i wish to keep over to the right side 'cookies to keep'.

My problem is : how do I delete the cookies in the left side 'cookies to delete'?

I run the cleaner but every time i go into the 'options-cookies' the cookies to delete are still there and accumulating. How do i get rid of them?

thanks