public void clearTheSlate(MOB mob)
	{
		if(mob==null) return;
		for(final Payment P : payments)
			if(P.mommyM==mob)
				payments.remove(P);
		if(dropOffs != null)
			for(final DropOff D : dropOffs)
				if(D.mommyM==mob)
				{
					boolean found=false;
					for(final DropOff A : associations)
						found = found || (A.mommyM==D.mommyM);
					if(!found)
						associations.add(D);
					dropOffs.remove(D);
					changedSinceLastSave=true;
				}
	}