Saving the "Model" does not save un-saved transformation

When you added a transformation, there is "save/validate" button on the transformation editor for saving the transformation. However, instead of that button you used the model save button on the top tool bar, this does not save the transformation.

1) At this point if you exit the designer it does not warn you that I have a unsaved transformation
2) once the designer re-started the transformation is gone.

I think saving the model should save any other editors underneath that model.

(IGNORE...)