TBD: When implementations allow to do delete the AA pointed by the baseAA of another AA instance, the updatedContents of
 the AA of the pointing AA must be modified so that it reflects difference from the grand parent. The implementations 
need to calculate the difference from the grand parent and modify the AAD of the pointing AA. We may need to consider 
the way one can retrieve the original AAD or modified AAD in this case. Allowing the deletion of the AA instance that 
has null value for the newer Resource Properties can avoid the situation..