How do I migrate projects from Basecamp 2?
You need to be the owner of the Basecamp 2 account where those projects are currently located. You also need to be an administrator or owner of the Basecamp 4 account you'd like them to end up.
In Basecamp 4's Adminland, click the ' Move Projects from Basecamp 2 to Basecamp 4' link under the 'Administrators' heading. We've made the process simple by guiding you from start to finish! Be sure to read the info we provide and click the green button at the bottom of the screen when you're ready to move on to the next step until it's complete.