VM starts to migrate again when we delete the succeeded MigPlan

CNV 4.19, MTC 1.8.6

Always

1. Create a VM, a MigPlan, a MigMigration -> live migrate a VM
2. Delete the MigPlan
3. Look at the VMIM

I have two VMs, both initially Succeeded to migrate.

For VM in test-ns: deleted MigPlan -> new VMIM started, Succeeded

For VM in test-ns2: deleted MigMigration, MigPlan -> new VMIM started, fails (I deleted all VMIMs in this ns2 at some point, but they are recreating)

$ oc get vmim -A
NAMESPACE   NAME                             PHASE       VMI
test-ns-2   kubevirt-workload-update-7qfwd   Failed      rhel-9-cyan-clam-69
test-ns-2   kubevirt-workload-update-drc8z   Failed      rhel-9-cyan-clam-69
test-ns-2   kubevirt-workload-update-m5hrx   Pending     rhel-9-cyan-clam-69
test-ns-2   kubevirt-workload-update-mn7kn   Failed      rhel-9-cyan-clam-69
test-ns-2   kubevirt-workload-update-smfl9   Failed      rhel-9-cyan-clam-69
test-ns-2   kubevirt-workload-update-w4zns   Failed      rhel-9-cyan-clam-69
test-ns     kubevirt-workload-update-4tlbd   Succeeded   fedora-scarlet-moose-83
test-ns     kubevirt-workload-update-l6xq2   Succeeded   fedora-scarlet-moose-83

VM does not migrate after the MigPlan is deleted

$ oc get vmim -n test-ns-2 kubevirt-workload-update-7qfwd -oyaml
apiVersion: kubevirt.io/v1
kind: VirtualMachineInstanceMigration
metadata:
  annotations:
    kubevirt.io/latest-observed-api-version: v1
    kubevirt.io/storage-observed-api-version: v1
    kubevirt.io/workloadUpdateMigration: ""
  creationTimestamp: "2025-04-23T06:07:47Z"
  generateName: kubevirt-workload-update-
  generation: 1
  labels:
    kubevirt.io/vmi-name: rhel-9-cyan-clam-69
    kubevirt.io/volume-update-migration: rhel-9-cyan-clam-69
  name: kubevirt-workload-update-7qfwd
  namespace: test-ns-2
  resourceVersion: "6381696"
  uid: 92112ace-667a-4b8d-96ae-2d977f9347f1
spec:
  vmiName: rhel-9-cyan-clam-69
status:
  migrationState:
    abortStatus: Succeeded
    completed: true
    endTimestamp: "2025-04-23T06:13:14Z"
    failed: true
    failureReason: 'Live migration aborted '
    migrationConfiguration:
      allowAutoConverge: false
      allowPostCopy: false
      allowWorkloadDisruption: false
      bandwidthPerMigration: "0"
      completionTimeoutPerGiB: 150
      nodeDrainTaintKey: kubevirt.io/drain
      parallelMigrationsPerCluster: 5
      parallelOutboundMigrationsPerNode: 2
      progressTimeout: 150
      unsafeMigrationOverride: false
    migrationUid: 92112ace-667a-4b8d-96ae-2d977f9347f1
    mode: PreCopy
    sourceNode: c01-jp419-6-r4qrr-worker-0-xfmgp
    sourcePod: virt-launcher-rhel-9-cyan-clam-69-92chz
    startTimestamp: "2025-04-23T06:13:14Z"
    targetDirectMigrationNodePorts:
      "38715": 0
      "40337": 49152
      "45217": 49153
    targetNode: c01-jp419-6-r4qrr-worker-0-5c4kh
    targetNodeAddress: 10.129.2.69
    targetPod: virt-launcher-rhel-9-cyan-clam-69-qnhgs
  phase: Failed
  phaseTransitionTimestamps:
  - phase: Pending
    phaseTransitionTimestamp: "2025-04-23T06:07:47Z"
  - phase: Scheduling
    phaseTransitionTimestamp: "2025-04-23T06:13:06Z"
  - phase: Scheduled
    phaseTransitionTimestamp: "2025-04-23T06:13:14Z"
  - phase: PreparingTarget
    phaseTransitionTimestamp: "2025-04-23T06:13:14Z"
  - phase: TargetReady
    phaseTransitionTimestamp: "2025-04-23T06:13:14Z"
  - phase: Running
    phaseTransitionTimestamp: "2025-04-23T06:13:14Z"
  - phase: Failed
    phaseTransitionTimestamp: "2025-04-23T06:13:14Z"

$ oc get vm -n test-ns-2 rhel-9-cyan-clam-69 -oyaml
apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  annotations:
    kubemacpool.io/transaction-timestamp: "2025-04-23T05:46:07.291170076Z"
    kubevirt.io/latest-observed-api-version: v1
    kubevirt.io/storage-observed-api-version: v1
  creationTimestamp: "2025-04-22T11:45:11Z"
  finalizers:
  - kubevirt.io/virtualMachineControllerFinalize
  generation: 3
  name: rhel-9-cyan-clam-69
  namespace: test-ns-2
  resourceVersion: "6381694"
  uid: 46247639-e007-4ef1-91c8-f7c7e35f8f6d
spec:
  dataVolumeTemplates:
  - metadata:
      creationTimestamp: null
      name: rhel-9-cyan-clam-69-volume
    spec:
      sourceRef:
        kind: DataSource
        name: rhel9
        namespace: openshift-virtualization-os-images
      storage:
        resources:
          requests:
            storage: 30Gi
  instancetype:
    kind: virtualmachineclusterinstancetype
    name: u1.small
  preference:
    kind: virtualmachineclusterpreference
    name: rhel.9
  runStrategy: Always
  template:
    metadata:
      creationTimestamp: null
      labels:
        network.kubevirt.io/headlessService: headless
    spec:
      architecture: amd64
      domain:
        devices:
          autoattachPodInterface: false
          interfaces:
          - macAddress: 02:a2:9f:00:00:09
            masquerade: {}
            name: default
        machine:
          type: pc-q35-rhel9.4.0
        resources: {}
      networks:
      - name: default
        pod: {}
      subdomain: headless
      volumes:
      - dataVolume:
          name: rhel-9-cyan-clam-69-volume
        name: rootdisk
      - cloudInitNoCloud:
          userData: |
            #cloud-config
            chpasswd:
              expire: false
            password: bj6x-s2zt-v3wt
            user: rhel
        name: cloudinitdisk
  updateVolumesStrategy: Migration
status:
  conditions:
  - lastProbeTime: null
    lastTransitionTime: "2025-04-22T13:09:02Z"
    status: "True"
    type: Ready
  - lastProbeTime: null
    lastTransitionTime: null
    message: All of the VMI's DVs are bound and not running
    reason: AllDVsReady
    status: "True"
    type: DataVolumesReady
  - lastProbeTime: null
    lastTransitionTime: null
    status: "True"
    type: LiveMigratable
  - lastProbeTime: null
    lastTransitionTime: null
    status: "True"
    type: StorageLiveMigratable
  - lastProbeTime: "2025-04-22T11:46:13Z"
    lastTransitionTime: null
    status: "True"
    type: AgentConnected
  - lastProbeTime: null
    lastTransitionTime: "2025-04-23T05:46:07Z"
    message: migrate volumes
    status: "True"
    type: VolumesChange
  created: true
  desiredGeneration: 3
  instancetypeRef:
    controllerRevisionRef:
      name: rhel-9-cyan-clam-69-u1.small-v1beta1-f26bbe8f-d791-4229-9011-ea3ccea531b5-1
    kind: virtualmachineclusterinstancetype
    name: u1.small
  observedGeneration: 3
  preferenceRef:
    controllerRevisionRef:
      name: rhel-9-cyan-clam-69-rhel.9-v1beta1-b1007ee5-1cf4-4aca-b2db-acd15de1a70a-1
    kind: virtualmachineclusterpreference
    name: rhel.9
  printableStatus: Running
  ready: true
  runStrategy: Always
  volumeSnapshotStatuses:
  - enabled: true
    name: rootdisk
  - enabled: false
    name: cloudinitdisk
    reason: Snapshot is not supported for this volumeSource type [cloudinitdisk]
  volumeUpdateState:
    volumeMigrationState:
      migratedVolumes:
      - destinationPVCInfo:
          claimName: rhel-9-cyan-clam-69-volume
          volumeMode: Block
        sourcePVCInfo:
          claimName: rhel-9-cyan-clam-69-volume-mig-lswk
          volumeMode: Block
        volumeName: rootdisk