Sorry, I might be not so clear in previous reply. I've mentioned all activities according TFS and YouTrack integration and import. Issue, I've provided you, relates to an issue about TFS import script, which is http://youtrack.jetbrains.com/issue/JT-10898 , please take a look.
Unfortunately, direct integration with TFS is not implemented yet. We have a feature request http://youtrack.jetbrains.com/issue/JT-6281 , please vote and leave comments.
I'd recommend you to use TeamCity to be able to integrate YouTrack with TFS. Please, take a look at comment http://youtrack.jetbrains.com/issue/JT-2786#comment=27-328069 with details and helpful links about how to achieve this.
Thank you.
Sorry, I might be not so clear in previous reply. I've mentioned all activities according TFS and YouTrack integration and import. Issue, I've provided you, relates to an issue about TFS import script, which is http://youtrack.jetbrains.com/issue/JT-10898 , please take a look.
Thank you.