Adding a new rule to existing dynatrace_autotag_v2 caused all existing rules changes

[son-la]

Describe the bug
When adding a new rule to the existing dynatrace_autotag_v2 resource, terraform plan reports all rules to be removed, and added again with the new rule.

Similar behaviour is seen in the UI change revision history, that when I added a new rule, it seems to be added on top of the rule list and become rule #1. All other rules are reordered and shown as changes in the revision. I suspect that this caused terraform plan to report such big change, while in reality, there's only 1 rule added and the rests remain the same.

To Reproduce
Steps to reproduce the behavior:

1. Run terraform apply to create a tag with resource dynatrace_autotag_v2 and 1 rule
2. Add a new rule into dynatrace_autotag_v2 rules. Run terraform plan

Expected behavior
terraform plan shows 1 new rule to be added

Screenshots

      ~ rules {
          - rule {
              - enabled             = true -> null
              - type                = "ME" -> null
              - value_format        = "xxxx" -> null
              - value_normalization = "Leave text as-is" -> null
                # (1 unchanged attribute hidden)

              - attribute_rule {
                  - azure_to_pgpropagation       = false -> null
                  - azure_to_service_propagation = false -> null
                  - entity_type                  = "SERVICE" -> null
                  - host_to_pgpropagation        = false -> null
                  - pg_to_host_propagation       = false -> null
                  - pg_to_service_propagation    = false -> null
                  - service_to_host_propagation  = false -> null
                  - service_to_pgpropagation     = false -> null

                  - conditions {
                      - condition {
                          - case_sensitive     = true -> null
                          - integer_value      = 0 -> null
                          - key                = "SERVICE_DETECTED_NAME" -> null
                          - operator           = "EQUALS" -> null
                          - string_value       = "xxx" -> null
                            # (5 unchanged attributes hidden)
                        }
                    }
                }
            }
          + rule {
              + enabled             = true
              + type                = "ME"
              + value_format        = "xxxx"
              + value_normalization = "Leave text as-is"
                # (1 unchanged attribute hidden)

              + attribute_rule {
                  + entity_type                 = "SERVICE"
                  + service_to_host_propagation = false
                  + service_to_pgpropagation    = false

                  + conditions {
                      + condition {
                          + case_sensitive     = true
                          + key                = "SERVICE_DETECTED_NAME"
                          + operator           = "EQUALS"
                          + string_value       = "xxx"
                            # (5 unchanged attributes hidden)
                        }
                    }
                }
            }
          + rule {
              + enabled             = true
              + type                = "ME"
              + value_format        = "yyyy"
              + value_normalization = "Leave text as-is"
                # (1 unchanged attribute hidden)

              + attribute_rule {
                  + entity_type                 = "SERVICE"
                  + service_to_host_propagation = false
                  + service_to_pgpropagation    = false

                  + conditions {
                      + condition {
                          + case_sensitive     = true
                          + key                = "SERVICE_DETECTED_NAME"
                          + operator           = "EQUALS"
                          + string_value       = "yyyy"
                            # (5 unchanged attributes hidden)
                        }
                    }
                }
            }
        }

Desktop (please complete the following information):

• terraform version: 1.10.4
• dynatrace provider version: 1.75.1

Additional context
Add any other context about the problem here.

[son-la]

When using rules_maintained_externally=true with "dynatrace_autotag_rules", the behaviour seems to be different that the new rule is added to the bottom (checked via revision history).

Adding and removing a rule does show correctly in terraform output that the particular rule is changed (added/ deleted). However, removing a rule which is in the middle of the rule lists caused the reorder, which can be seen in the UI revision history.