"Split the Selected List..." feature
the new lists within the Selected Group based on the toggle value of the Selected List. You can
create a new list for those names toggled to "Y"es and a new
list for those names toggled to "N"o.
The Selected List remains completely intact.
Why? As briefly mentioned by the "Toggle feature", this feature is extremely powerful to track various efforts. E.g.: Your organization mails out a contribution request solicitation. As contributions are received, update the date, amount and then toggle the name to "Y"es. At some point in time, you'll want to split the list and then...