Release copy is limited

I should be able to copy a release, Feature assignments, To Do assignments and Due dates from one release to another. I currently have 10 releases with all the same people assigned and with the same To Do dates. But the copy function is limited and I have to recreate each release which takes hours to do. I should be able to have a selection box when I COPY a release and check those items I want copied, including the assigment and dates.