Although I don’t have an answer to your question regarding an easy way to migrate from SocialEngine, I thought I’d reach out to let you know SocialEngine is under new ownership as of January, 2014.
I’m one of the new owners, and have been working diligently with a new team to bring the platform back to “love” status for people like yourself. We’ve had three new releases this year, and if interested you can learn more about the new era for SocialEngine via the following blog post: http://www.socialengine.com/blog/2014/01/23/new-era-for-socialengine