I can see some others have had similar issues but my main problem is a little different than what I've seen.
Since you can't delete email lists that have been used, when editing those lists, you can attach a new query but you can't disassociate the list with the original email it was used for. So now lists say that we've sent 3-4 emails with them but in reality that's us reusing the "list" with entirely different queries and purposes. It makes keeping that data organized a problem. BB chat says there is no solution so please allow the deletion of old lists NOT just a deactivation.