Error When Importing to a for_each Resource

I’m trying to import multiple AWS IAM policies and IAM roles to my tfstate files using a shell script to automate the import mechanism. It works fine when I tries to import the IAM roles, but when I tries to import an IAM policy it seems that the imported state overwrite the previous import results and I always comes to:

Error: Invalid index
│ 
│   on /project/iam_role.tf line 14, in resource "aws_iam_role" "roles":
│   14:         aws_iam_policy.policies["S3FullWithoutDelete"].arn,
│     ├────────────────
│     │ aws_iam_policy.policies is object with 1 attribute "IAMEnableMFA"
│ 
│ The given key does not identify an element in this collection value.
# There are other similar errors after the import, omitted for brevity

Here is an example of the command that I’m trying to run.

terraform import 'aws_iam_policy.policies["IAMEnableMFA"]' arn:aws:iam::XXXXXXXXXXXX:policy/IAMEnableMFA

Here is the iam_policy.tf file configuration.

resource "aws_iam_policy" "policies" {
  for_each = {
    "Billing-Organizations"          = "billing_organizations.json"
    "BillReadOnly"                   = "bill_readonly.json"
    "AccountAndTaxsettings"          = "account_and_tax.json"
    "S3FullWithoutDelete"            = "s3_full_without_delete.json"
    "ConsolidatedBillingForMOCB"     = "consolidated_billing_for_mocb.json"
    "Organizations"                  = "organizations.json"
    "CostExplorerAPI"                = "cost_explorer_api.json"
    "Invite_Account_To_Organization" = "invite_account_to_organization.json"
    "IAMEnableMFA"                   = "iam_enabled_mfa.json"
    "OrganizationsReadOnly"          = "organizations_read_only.json"
    "Modify_EC2_RI"                  = "modify_ec2_ri.json"
    "billing-upload-s3-cur"          = "billing_upload_s3_cur.json"
  }
  name   = each.key
  policy = file("${path.module}/policy/${each.value}")
  tags   = var.resource_tags
}

And this is the iam_role.tf file configuration.

resource "aws_iam_role" "roles" {
  for_each = {
    "ADFS-Billing" = {
      "file" = "adfs_billing.json"
      "policy_arns" = [
        aws_iam_policy.policies["Billing-Organizations"].arn,
        aws_iam_policy.policies["Modify_EC2_RI"].arn,
        data.aws_iam_policy.policies["IAMFullAccess"].arn,
        data.aws_iam_policy.policies["Billing"].arn,
        data.aws_iam_policy.policies["ReadOnlyAccess"].arn,
        data.aws_iam_policy.policies["AWSSupportAccess"].arn,
        data.aws_iam_policy.policies["AWSCloudTrail_FullAccess"].arn,
        data.aws_iam_policy.policies["AWSBillingConductorFullAccess"].arn,
        aws_iam_policy.policies["S3FullWithoutDelete"].arn,
        aws_iam_policy.policies["AccountAndTaxsettings"].arn
      ]
    }
   # There are other similar items, but omitted for brevity
  }

  name                = each.key
  assume_role_policy  = file("${path.module}/trust_relationships/${each.value["file"]}")
  managed_policy_arns = each.value["policy_arns"]
  tags                = var.resource_tags
}

How can I import all of these policies to my tfstate file properly?

You need to show us all your .tf file content for people to be able to understand the problem here.

Thanks for the reminder, I have added the files content of the related issue.