ColdFusion entitySave() Issue

I'm trying to use entitySave() and am finding a weird behavior.  My parent object links to the child object as such:

<cfproperty name="focusareas" singularname="focusarea"
          fieldtype="one-to-many" type="array" cfc="FocusArea"
          fkcolumn="parentid" cascade="delete" />

When I save the parent, I am using an Ajax call and the service proxy uses an entityNew() to create the child, sets its id and other variables and then calls entitySave().

var parent = entityLoadByPK('Parent', arguments.id);
  parent.setID(arguments.id);
  parent.setTitle(arguments.title);
  entitySave(parent);

The logical behavior is that entitySave() determines if the record should be inserted or updated. What happens is pretty strange though. Check out the Hibernate log:

Hibernate:
    update
        Parent
    set
        title=?
    where
        id=?
Hibernate:
    update
        FocusArea
    set
        parentid=null
    where
        parentid=?

The wackiness is that entitySave() does indeed perform an update as opposed to an insert as expected, but then disconnects itself from the child record. If I instead do an entityLoadByPK() and then set all values, everything works as expected. The issue with this is I should not have to check and see if the parent is new and perform an entityNew() or entityLoadByPK() explicitly. This is what ORM does for you. Bug? Thoughts?