I created a HIP file (attached) that has in it a curve and a sphere. Both the curve and sphere are contained in a subnet. I have added a follow path constrain to the sphere, so that it moves along the curve. When I hit the play button in Unity it moves as expected.

I created an HDA from the subnet. When I load the HDA in Unity, I see the curve and the sphere, but no movement takes place when I hit play, and I cannot find anything in any of the game objects that relates to animation. I can't seem to find any content online that addresses exporting animations from Houdini to Unity using HDAs. Is this possible?