[Animation Graphs] Published animation graphs do not preserve parameters

[Noble_Draconian]

Currently, if an animation graph is published it loses all of its parameters. On re-import the parameters are gone.

To reproduce:

1. Create an animation graph.
2. Create a Sequence node
3. Create a string parameter named “Avatar State”
4. Hook the parameter up to the Sequence node’s “Selection” field
5. Publish the animation graph
6. Locally delete the animation graph
7. Re-import the animation graph from Roblox
8. Observe the parameter is gone

[DeFactoCepti]

Thank you for the bug report-- I will look into this!