Diff of Value Changes inside Reference Changes - javers

Question

I have a Application entity and a User entity. Theres a one to many relation from application to users, i.e one application can have multiple users.
i update the user and change the application assigned to him. So far i have below:
Diff diff = javers.compare(oldUser, newUser);
List<ReferenceChange> referenceChanges = diff.getChangesByType(ReferenceChange.class);
for (ReferenceChange referenceChange : referenceChanges) {
Object oldRef = referenceChange.getLeftObject().get();
Object newRef = referenceChange.getRightObject().get();
Diff refDiff = javers.compare(oldRef,newRef);
}
Please find the below result while debugging:
referenceChanges List:
ReferenceChange{globalId:'com.ds.appmanager.services.domain.User/3', property:'application', oldRef:'com.ds.appmanager.services.domain.Application/7', newRef:'com.ds.appmanager.services.domain.Application/3'}
oldRef
Application [applicationId=7, applicationName=KYC, applicationDesc=DEV_TEST, applicationLaunch=2016-12-31 00:00:00.0, live=false]
newRef
Application [applicationId=3, applicationName=KYC, applicationDesc=hellp, applicationLaunch=Sat Mar 12 00:00:00 IST 2016, live=true]
When i pass both objects to javers.compare(oldRef,newRef), it again gives me same result as referenceChanges. I thought it should give me Value Changes of each property e.g, applicationDesc, oldVal = DEV_TEST, newVal = hellp.
Am i missing something here? All i want to do is to get the value changes of properties of the Application object which is referenced inside User object.
P.S: If i change Object oldRef = referenceChange.getLeftObject().get(); to Object oldRef = referenceChange.getLeftObject();, i get JaversException: CLASS_EXTRACTION_ERROR JaVers bootstrap error - Don't know how to extract Class from type 'T'.
UPDATE
Just noted i am not getting ValueChanges while doing Diff refDiff = javers.compare(oldRef,newRef);
Debug shows follwing changes:
Diff:
1. NewObject{globalId:'com.ds.appmanager.services.domain.Application/7'}
2. ObjectRemoved{globalId:'com.ds.appmanager.services.domain.User/5'}
3. ObjectRemoved{globalId:'com.ds.appmanager.services.domain.Application/3'}
4. ObjectRemoved{globalId:'com.ds.appmanager.services.domain.User/6'}
5. ObjectRemoved{globalId:'com.ds.appmanager.services.domain.User/7'}
6. ReferenceChange{globalId:'com.ds.appmanager.services.domain.User/3', property:'application', oldRef:'com.ds.appmanager.services.domain.Application/3', newRef:'com.ds.appmanager.services.domain.Application/7'}