Please upgrade here. These earlier versions are no longer being updated and have security issues.
HackerOne users: Testing against this community violates our program's Terms of Service and will result in your bounty being denied.
New to Vanilla - need to migrate from vBulletin 4.x
Welcome to the community.
You can use this addon: https://open.vanillaforums.com/addon/porter-core
See the documentation here: http://docs.vanillaforums.com/developer/importing/