Soft Object References set directly on parameters are not correctly referenced

REGRESSION: This regressed between 4.23 and 4.24

Assets set directly in a soft object reference pin on a blueprint function are not correctly referenced.

See UDN: https://udn.unrealengine.com/questions/563593/view.html

1. Download and extract the attached project.
2. Open the project in editor.
3. Open up TestBP and save, to use save logic from current build
4. Right-click TestBP and select Reference Viewer.

RESULT

You will see a reference to the RefByVariable material (which is referenced in a variable in the BP), but not to the DirectRef material (which is set directly in a node param).