We have members who are "snowbirds" and we have entered the dates they move, but since the database does not automatically change to their effective date, it would be nice to query this information so I could change their address at the proper time.  Also if I could query these people, I could exclude them from AddressFinder results communications.  I have done a work around by creating a persona note that queries the word "snowbird," but querying the in effect date would be very helpful.