[TGW] Wrong update in place for ibm_tg_connection_prefix_filter

[Ak-sky]

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Terraform CLI and Terraform IBM Provider Version

Terraform Version v1.9.2
Terraform IBM Provider Version v1.72.2

Affected Resource(s)

• ibm_tg_connection_prefix_filter

Terraform Configuration Files

There is a TF update in place on a subsequent TF plan/apply for this example,

Terraform will perform the following actions:

  # module.tg_gateway_connection.ibm_tg_connection_prefix_filter.add_prefix_filter[1] will be updated in-place
  ~ resource "ibm_tg_connection_prefix_filter" "add_prefix_filter" {
      - before        = "c88803e8-0d94-40dd-8154-39f8c74141ce" -> null
        id            = "c38857de-78f9-4eaf-bf5f-6ee8c35a305a/bec98499-f3aa-4a47-b6c3-e9c00bf41872/d5d7fbd7-32a2-4d5c-89ad-77b9eddd4cff"
        # (9 unchanged attributes hidden)
    }

But there is no before value, so why update in place?

filter_ids = [
  {
    "action" = "permit"
    "before" = tostring(null)
    "connection_id" = "bec98499-f3aa-4a47-b6c3-e9c00bf41872"
    "created_at" = "2024-12-18T14:48:55.047Z"
    "filter_id" = "c88803e8-0d94-40dd-8154-39f8c74141ce"
    "gateway" = "c38857de-78f9-4eaf-bf5f-6ee8c35a305a"
    "ge" = 24
    "id" = "c38857de-78f9-4eaf-bf5f-6ee8c35a305a/bec98499-f3aa-4a47-b6c3-e9c00bf41872/c88803e8-0d94-40dd-8154-39f8c74141ce"
    "le" = 24
    "prefix" = "10.10.10.0/24"
    "timeouts" = null /* object */
    "updated_at" = "2024-12-18T14:48:55.047Z"
  },
  {
    "action" = "deny"
    "before" = tostring(null)
    "connection_id" = "bec98499-f3aa-4a47-b6c3-e9c00bf41872"
    "created_at" = "2024-12-18T14:48:52.046Z"
    "filter_id" = "d5d7fbd7-32a2-4d5c-89ad-77b9eddd4cff"
    "gateway" = "c38857de-78f9-4eaf-bf5f-6ee8c35a305a"
    "ge" = 24
    "id" = "c38857de-78f9-4eaf-bf5f-6ee8c35a305a/bec98499-f3aa-4a47-b6c3-e9c00bf41872/d5d7fbd7-32a2-4d5c-89ad-77b9eddd4cff"
    "le" = 24
    "prefix" = "10.20.10.0/24"
    "timeouts" = null /* object */
    "updated_at" = "2024-12-18T14:48:52.046Z"
  },
  {
    "action" = "deny"
    "before" = tostring(null)
    "connection_id" = "0a37dc41-9041-4f9e-be84-cd3fd1561ee6"
    "created_at" = "2024-12-18T14:48:52.787Z"
    "filter_id" = "95404115-81c9-46cd-aa15-a0a171d53c29"
    "gateway" = "c38857de-78f9-4eaf-bf5f-6ee8c35a305a"
    "ge" = 24
    "id" = "c38857de-78f9-4eaf-bf5f-6ee8c35a305a/0a37dc41-9041-4f9e-be84-cd3fd1561ee6/95404115-81c9-46cd-aa15-a0a171d53c29"
    "le" = 24
    "prefix" = "10.20.10.0/24"
    "timeouts" = null /* object */
    "updated_at" = "2024-12-18T14:48:52.787Z"
  },
]

Debug Output

Panic Output

Expected Behavior

There should be no update in place, TF should matches the infra on subsequent TF plan/apply.

Actual Behavior

There is an update in place.

Steps to Reproduce

• Do TF apply for this example
• Run TF plan/apply.

Important Factoids

References

• #0000