HI TGC.
This video will show what I think is going wrong with loading animated FBX files into AppGameKit, and the mdoel in both Blender and FBX formats to test with. Not sure if it's an FBX / loader issue, or how AppGameKit is handling bones once loaded, or perhaps both. Hopefully you can fix this - it;s a major headache for anyone trying to do 3D work in AGK.
As a side, if you export from Blender in DAE then the model is fine, but the animation is lost altogether. Blender loading directly into AppGameKit does not work at all, however that is not unexpected as the different generations of Blender aren;t even compatible with each other anymore.