I understand if you wish to pass a vector of MyClass objects and it is a temporary variable, if there is a move constructor defined for MyClass then this will be called, but what happens if you pass a vector of boost::shared_ptr<MyClass> or std::shared_ptr<MyClass>? Does the shared_ptr have a move constructor which then call's MyClass's move constructor?
if there is a move constructor defined for MyClass then this will be called
Usually not. Moving a vector is usually done my transferring ownership of the managed array, leaving the moved-from vector empty. The objects themselves aren't touched. (I think there may be an exception if the two vectors have incompatible allocators, but that's beyond anything I've ever needed to deal with, so I'm not sure about the details there).
Does the shared_ptr have a move constructor which then call's MyClass's move constructor?
No. Again, it has a move constructor which transfers ownership of the MyClass object to the new pointer, leaving the old pointer empty. The object itself is untouched.