I am migrating knowledge articles fron an existing SFDC org to a new SFDC org and need to retain their version history. Is this possible? We tried using the Heroku KB tool: https://kbapps.herokuapp.com/ with no success and reverted to using Dataloader. Unfortunatley, there is no  way to import version history. We are thinking of creating custom fields and writing a trigger to copy version fields to custom fields and using the custom fields. The client has to retain the version data for audit purposes. Any ideas?