ChangeSummary's getOldContainer() and getOldContainmentProperty() methods are not working correctly.

I am unable to get ChangeSummary to return a value using the getOldContainer() method or the getOldContainmentProperty() method. I think there may be an issue when using a three-tier model. What I mean by this is I have created a top level 'root' type that contains two unique 'parent' types. Each of the parent types has a unique property that can contain a child type. When I set the child to be contained by parent2, then start logging on the ChangeSummary, then set the containment to parent1, I am not able to retrieve the old parent container nor the old containment property.

I will attach a test case.