I have a whole list of contacts whose emails have changed. When we added the new email a new contact was created. Is there a way to keep the original history information since it is the same person? Also we have member organizations who are changing their email addresses all at once. Is there any way to make their email addresses change other than changing them one by one? Ex. johnsmith @ whatever.com is now johnsmith @ wearewhatever.net but for the whole company?