I have a rather LARGE group of existing constituents for whom I have new relationship data.  It would be GREAT to be able to add this new information through a constituent batch rather than opening each record individually (similar to adding new gifts to EXISTING constituents when running gift batches -- would be able to "look up" the constituent right in the batch -- perhaps Blackbaud can create a 2nd type of constituent batch for use w/ constituents already in the database?