How to modify lifecycle meta argument when updating the Okta Terraform Provider from version 3x to 4x.

• Terraform 

• Deprecated resources and datasources causing issues with the prior Terraform lifecycle meta-argument.
• Before Okta Terraform Provider 4x, the ignore_changes argument could have been leveraged for some resources/data sources, as seen in the example below. It was advised to add the lifecycle argument to prevent the groups from being unassigned on subsequent runs: 

  resource "okta_app_oauth" "example" {
    label          = "example"
    type           = "service"
    response_types = ["token"]
    grant_types    = ["client_credentials"]
    token_endpoint_auth_method = "private_key_jwt"
  
    groups  = {
    name        = "Example"
    description = "My Example Group"
  }
  
   lifecycle {
      ignore_changes = [
        groups
      ]
    }
  }
  

1. The recent release of terraform provider version 4x has brought about modifications to various resources. As a result, certain attributes have been removed. Consequently, the direct configuration of groups in the resource block "okta_app_oauth" is no longer supported.

   resource "okta_app_oauth" "example" {
     label                      = "example"
     type                       = "web"
     grant_types                = ["authorization_code"]
     redirect_uris              = ["https://example.com/"]
     response_types             = ["code"]
   }

2. To assign the groups to the app it is necessary to employ a new resource  called "okta_app_group_assignments" for managing this particular aspect.

   resource "okta_app_group_assignments" "example" {
     app_id   = "<app id>"
     group {
       id = "<group id>"
       priority = 1
     }
     group {
       id = "<another group id>"
       priority = 2
       profile = jsonencode({"application profile field": "application profile value"})
     }
   }

3. Consequently, the ignore_changes = [ groups ] will not be needed, since the resource okta_app_group_assignments does not possess the issue of groups being unassigned on the subsequent runs.