[galaxy-user] Moving Histories from old to new Galaxy build

Hi all. We are moving from an old version of Galaxy (build: 1349) to the current one; we know there is a big gap in between… I’m wondering if there is a way to move in just one unpainful step all the saved histories from the old version to the new one, or alternatively to download/save entire histories at once from the old and then reload them to the new build. Any other ideas? Thank you a lot for your help! Lucilla