Animation and Rigging Tools: FAQ, Known Issues and Feature Roadmap

Hey guys,
I am having an issue when exporting my skeletal mesh from Maya into UE4. Please bear with me as I am still learning UE4.
I have followed all the tutorials and documentation that I can find, but I am still having the following issue.

I am using the art tool in Maya 2014 and following all of the proper FBX settings. But when I import my skeletal mesh into UE4, there is no bone hierarchy. All the bones are just at the root. Now, I know something HAS to be wrong with my FBX settings, but I have no clue!
The work around that I have found is just exporting from Maya 2013 (or re-exporting my export in 2013). So I guess this really isn’t a huge issue, but I would like to figure out why 2014 is not working for me. Any ideas?