`azurerm_key_vault_access_policy` was not exported correctly.

Apply the following Terraform code:

```hcl
provider "azurerm" {
features {
key_vault {
purge_soft_delete_on_destroy = true
}
}
}

data "azurerm_client_config" "current" {}

resource "azurerm_resource_group" "example" {
name = "zjhe-aztfy-bugbash"
location = "West Europe"
}

resource "azurerm_key_vault" "example" {
name = "zjheaztfybugbash${replace(random_pet.pet.id, "-", "")}"
location = azurerm_resource_group.example.location
resource_group_name = azurerm_resource_group.example.name
enabled_for_disk_encryption = true
tenant_id = data.azurerm_client_config.current.tenant_id
soft_delete_retention_days = 7
purge_protection_enabled = false

sku_name = "standard"

# access_policy {
# tenant_id = data.azurerm_client_config.current.tenant_id
# object_id = data.azurerm_client_config.current.object_id
#
# key_permissions = [
# "Get",
# ]
#
# secret_permissions = [
# "Get",
# ]
#
# storage_permissions = [
# "Get",
# ]
# }
}

resource "azurerm_key_vault_access_policy" "example" {
key_vault_id = azurerm_key_vault.example.id
tenant_id = data.azurerm_client_config.current.tenant_id
object_id = data.azurerm_client_config.current.object_id

certificate_permissions = [
"Create",
"Delete",
"DeleteIssuers",
"Get",
"GetIssuers",
"Import",
"List",
"ListIssuers",
"ManageContacts",
"ManageIssuers",
"SetIssuers",
"Update",
]

key_permissions = [
"Backup",
"Create",
"Decrypt",
"Delete",
"Encrypt",
"Get",
"Import",
"List",
"Purge",
"Recover",
"Restore",
"Sign",
"UnwrapKey",
"Update",
"Verify",
"WrapKey",
]

secret_permissions = [
"Backup",
"Delete",
"Get",
"List",
"Purge",
"Recover",
"Restore",
"Set",
]

storage_permissions = [
"Get",
"List",
"Set",
"SetSAS",
"GetSAS",
"DeleteSAS",
"Update",
"RegenerateKey"
]
}

resource "azurerm_key_vault_key" "generated" {
name = "generated-certificate"
key_vault_id = azurerm_key_vault.example.id
key_type = "RSA"
key_size = 2048

key_opts = [
"decrypt",
"encrypt",
"sign",
"unwrapKey",
"verify",
"wrapKey",
]
depends_on = [azurerm_key_vault_access_policy.example]
}

resource "azurerm_key_vault_secret" "example" {
name = "secret-sauce"
value = "szechuan"
key_vault_id = azurerm_key_vault.example.id

depends_on = [azurerm_key_vault_access_policy.example]
}

resource "random_pet" "pet" {
length = 1
}

resource "azurerm_recovery_services_vault" "vault" {
name = "zjhe-aztfy-bugbash-${random_pet.pet.id}"
location = azurerm_resource_group.example.location
resource_group_name = azurerm_resource_group.example.name
sku = "Standard"
}

resource "azurerm_storage_account" "sa" {
name = replace("zjhe-aztfy-${random_pet.pet.id}", "-", "")
location = azurerm_resource_group.example.location
resource_group_name = azurerm_resource_group.example.name
account_tier = "Standard"
account_replication_type = "LRS"
}

resource "azurerm_backup_container_storage_account" "container" {
resource_group_name = azurerm_resource_group.example.name
recovery_vault_name = azurerm_recovery_services_vault.vault.name
storage_account_id = azurerm_storage_account.sa.id
}
```

Then try to export resource group via aztfy, the KeyVault's access policies were not exported successfully.