I found this question but it was only similar and, more importantly, dated by over a year. I'm hoping there is something I can't find out there and that is better than what that answer points to.

Requirements:

• Preserve source code history (even if only loosely via text only since all of our prior users may not be created in the TFS repository)
• Preserve our item tracking history (again, even if just loosely since Fortress wasn't all that great about this). Ultimately, I want some searchable history of what we have done in the past and why. I don't necessarily need all of the hooks in place tying work items to source code or anything like that, but I do need discussions and decisions associated with the work items kept around.