I think it is generated on the fly. You can copy and paste it ( ID6 ) when it is selected / showing the bounds.
You're right about it being generated on the fly, Pickory. When I select the path manually and query the document with Extendscript, there's an extra item. I'm wondering if there's a way to select the path with ExtendScript.
I'm not sure if you can do this from a script. From C++, you have. IAnimationFacade.h
/** Given an interface for an item with a motion path, create a new page item from the motion path points and select it.
@param pageItemRef is the UIDRef of the page item to created a motion path item from.
@return the UIDRef of the created item.
virtual UIDRef CreateAnimationMotionPathPageItem(const UIDRef& pageItemRef) = 0;