How can I migrate Team Foundation Server 2013 Work Items to a new TFS Git Repository?

I'm busy migrating a Team Foundation Server 2012 Repository to a Git repository running in TFS 2013.

I'm using the recommended process:

1. Clone a Git repository form TFS using git-tf.
2. Create the Git repository using Visual Studio 2013 connected to a TFS 2013 server.
3. Copy the cloned repository into the newly created local git repository (excluding the conf file).
4. Commit and Sync the changes back into the TFS 2013 Git repository.

This process keeps the code change history intact, but it does not import the Work Items for the project.

Is there a better way to migrate from TFS 2012 to TFS GIT 2013 that will keep the TFS Work items intact?

You need to use a tool that migrates Work Items:

1. Excel - you can export and import using excell but you loose history and state
2. TFS Integration Tools - you can migrate history but it is complex
3. API - this is by far the best way although you need coding knowledge.

If you contact me directly I can give you access to some code that may be useful.