Without ASG name interpolating the subnet ID:
~ aws_autoscaling_group.someapp
vpc_zone_identifier.#: "" => "<computed>"
-/+ aws_subnet.moving
availability_zone: "us-west-2c" => "<computed>"
cidr_block: "10.1.1.0/24" => "10.1.1.0/24"
map_public_ip_on_launch: "false" => "0"
vpc_id: "vpc-e825108d" => "vpc-e925108c" (forces new resource)
Plan: 1 to add, 1 to change, 1 to destroy.
With name interpolating the subnet ID:
-/+ aws_autoscaling_group.someapp
default_cooldown: "300" => "<computed>"
desired_capacity: "1" => "<computed>"
force_delete: "false" => "0"
health_check_grace_period: "0" => "<computed>"
health_check_type: "EC2" => "<computed>"
launch_configuration: "terraform-vsvm7ctixfbgpcqzzai5ipcgb4" => "terraform-vsvm7ctixfbgpcqzzai5ipcgb4"
max_size: "1" => "1"
min_size: "1" => "1"
name: "someapp - terraform-vsvm7ctixfbgpcqzzai5ipcgb4" => "someapp - ${aws_launch_configuration.vanillaubuntu.id} - ${aws_subnet.moving.id}" (forces new resource)
vpc_zone_identifier.#: "1" => "<computed>"
wait_for_capacity_timeout: "10m" => "10m"
-/+ aws_subnet.moving
availability_zone: "us-west-2c" => "<computed>"
cidr_block: "10.1.1.0/24" => "10.1.1.0/24"
map_public_ip_on_launch: "false" => "0"
vpc_id: "vpc-e825108d" => "vpc-e925108c" (forces new resource)