We have this line that states extra manifests names might be different after migration. This was the case at GA, but functionality has changed so the original name will be retained.

https://github.com/openshift/openshift-docs/blob/enterprise-4.20/modules/ztp-migrating-sno-clusterinstnce.adoc?plain=1#L254

See example output from latest version also. The example output might also need updating in this section.

Successfully read SiteConfig: cnfdf28/cnfdf28
Converted cluster 1 (cnfdf28) to ClusterInstance: /resources/output/cnfdf28.yaml
WARNING: Added default extraManifest ConfigMap 'extra-manifests-cm' to extraManifestsRefs. This configmap is created automatically.
Successfully converted 1 cluster(s) to ClusterInstance files in /resources/output/: cnfdf28.yaml
Generating ConfigMap kustomization files...
Using ConfigMap name: extra-manifests-cm, namespace: cnfdf28, manifests directory: extra-manifests
Generating ConfigMap kustomization files with name: extra-manifests-cm, namespace: cnfdf28, manifests directory: extra-manifests
Generating extraManifests for SiteConfig: /resources/cnfdf28.yaml
Successfully generated extra manifests in /resources/output/extra-manifests
--- Kustomization.yaml Generator ---
Scanning directory: /resources/output/extra-manifests
Found and adding: extra-manifests/06-kdump-master.yaml
Found and adding: extra-manifests/06-kdump-worker.yaml
Found and adding: extra-manifests/07-sriov-related-kernel-args-master.yaml
Found and adding: extra-manifests/07-sriov-related-kernel-args-worker.yaml
Found and adding: extra-manifests/08-set-rcu-normal-master.yaml
Found and adding: extra-manifests/08-set-rcu-normal-worker.yaml
Found and adding: extra-manifests/98-var-lib-containers-partitioned.yaml
Found and adding: extra-manifests/99-crio-disable-wipe-master.yaml
Found and adding: extra-manifests/99-crio-disable-wipe-worker.yaml
Found and adding: extra-manifests/99-sync-time-once-master.yaml
Found and adding: extra-manifests/99-sync-time-once-worker.yaml
Found and adding: extra-manifests/enable-crun-master.yaml
Found and adding: extra-manifests/enable-crun-worker.yaml
Found and adding: extra-manifests/set-core-user-password.yaml
------------------------------------
kustomization-configMapGenerator-snippet.yaml generated successfully at: /resources/output/kustomization-configMapGenerator-snippet.yaml
Content:
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
configMapGenerator:
    - files:
        - extra-manifests/06-kdump-master.yaml
        - extra-manifests/06-kdump-worker.yaml
        - extra-manifests/07-sriov-related-kernel-args-master.yaml
        - extra-manifests/07-sriov-related-kernel-args-worker.yaml
        - extra-manifests/08-set-rcu-normal-master.yaml
        - extra-manifests/08-set-rcu-normal-worker.yaml
        - extra-manifests/98-var-lib-containers-partitioned.yaml
        - extra-manifests/99-crio-disable-wipe-master.yaml
        - extra-manifests/99-crio-disable-wipe-worker.yaml
        - extra-manifests/99-sync-time-once-master.yaml
        - extra-manifests/99-sync-time-once-worker.yaml
        - extra-manifests/enable-crun-master.yaml
        - extra-manifests/enable-crun-worker.yaml
        - extra-manifests/set-core-user-password.yaml
      name: extra-manifests-cm
      namespace: cnfdf28
generatorOptions:
    disableNameSuffixHash: true

------------------------------------

    1.
    2.
    3.