The ability to freeze a mining list at a specific point in time. If we were able to us filters to setup a list, and then freeze it, so that the information does not update until unfrozen, it would benefit teams (especially when marketing) as it allows the same customer data to be accessed at a later date without having to worry about that data adjusting due to updates to customer profiles (like latest attempt updating following an email blast). I ran into an issue recently, following sending a email blast, where our target list adjusted from 200 to 7 customers following an email, so this made it challenging to assign a follow-up call task, and then a week later, to analysis whether those assigned calls had been made or not, which hurts our ability to mange campaigns. Going forward, I know the new 2.0 Email blast tool will help with this issue, but what about Private Sale list exports, or special events, there are many cases when it would be beneficially to be able to "freeze" it an access this list of customer unchanged in the future.