Update for anybody else that has this issue. I ultimately did the following and it worked:
- Make sure UncookedOnly is specified in **both **the uproject and build.cs file (Maybe I missed this before?)
- Make sure the run-time module is specified to load before the content so that the anim node is loaded before the graph itself (I put it in PreLoadingScreen, which achieved this)
- Do a clean build to make sure things are getting rebuilt.