Input Spline Shapes from Prefabs destroys graph

[tairoark]

The issue comes from using a prefab asset as an input for the Input Spline Shape. To be able to use, you need first to instanciate the prefab, then use the instance.
This is because splines need to be initialized, which happens in their OnEnable and/or Start method. A prefab asset does not have those methods called.
Did this help?

You hit it correctly. The line in the code that Instantiated the loaded spline shape prefab resource was inadvertently deleted at some point. Thus I was assigning the Prefab and not the Instance to the Shape of the Input Spline Shape

I apologize for wasting your time.