Can I Retrieve Data from a Deleted ELB or Ec2 Instance?
Metrics data for deleted ELBs and decommissioned EC2 instances are still available. MetricsData associated with a terminated instance will be removed when the Instance is shut down. In contrast, MetricsData associated with your account will remain on the MetricInfraService until you delete it. This information can be used for diagnosing problems with your ECS cluster or ELB.
