There should be an option to COPY/MOVE DATE for companies, just like there is with contacts. I realize this was originally a contact database, but now companies are a big part of it too so this should be something that is an option for the user. Having to copy and paste each and every history/note/activity/opportunity, can be very time consuming for a company with a lot of them. So the user might just leave the duplicate companies, which in turn makes their database even more cluttered. This could be easily changed with an addition for COPY/MOVE DATE for companies.