I found it's much easier to understand the concepts behind move operations if you write an object that implemented move semantics by itself.

  class Object
  {
     int* data = new int[32];
     void move_into( Object& object )
     {
        object.data = data;
        data = nullptr;
     }
     ~Object()
     {
        delete[] data;
     }
  }

  Object a;
  Object b;
  a.move_into( b );

I think much of the confusion arises from wondering where is the allocation for int* data located? It's somewhere on the heap. What if the data member were int data[32] instead? What would the class look like? What would 'a' look like afterwards?