I have terraform code which deploys ec2 and reuses Elastic IPs without distroying.
Now I have new EIP which is migrated from different account, I want use that IP instead of EIP in current deployment.

Current working code

resource "aws_eip" "main" {
  count = var.num_instances
  vpc = true
  tags = merge(
    local.tags,
    {
      "Name" = "${count.index + 1}-${var.env_name}-${var.region}",
    },
  )

  lifecycle {
    prevent_destroy = true
  }
}

resource "aws_eip_association" "main" {
  count = var.num_instances
  instance_id = aws_instance.main[count.index].id
  allocation_id = aws_eip.main[count.index].id

  lifecycle {
    create_before_destroy = true
  }
}

I tried to get list of IPs and tried to reuse but it does not work

+ data "aws_eip" "existing_eips" {
+  filter {
+    name = "tag:Team"
+    values = ["myteam"]
+  }
+ }

resource "aws_eip_association" "main" {
  count = var.num_instances
  instance_id = aws_instance.main[count.index].id
-  allocation_id = aws_eip.main[count.index].id
+  allocation_id = data.aws_eip.existing_eips.id[count.index]

  lifecycle {
    create_before_destroy = true
  }
}

What is standard way to do this, I don’t want to play with state file.

Thanks in advance.