Smartlist don't remove leads

Guys, i had configured a smart filter to a list and after run my cron a lot of leads was added to this list. Ok, everything is fine for this.

But, i removed the smart filter of this same list and run the cron again and the leads previlious added don’t was removed.

Is that right this? There’s anything else that i need to do?

Thanks!

Guys, i had configured a smart filter to a list and after run my cron a lot of leads was added to this list. Ok, everything is fine for this.
But, i removed the smart filter of this same list and run the cron again and the leads previlious added don’t was removed.
Is that right this? There’s anything else that i need to do?
Thanks!