Description of problem:

Globalhub is working on the feature about migrating the ztp(Clusterinstance+IBI+GitOps) created cluster from one ACM hub to another.

I have migrated all other resources and secret to new hub. Then migrate clusterinstance, but the clusterinstance "PROVISIONDETAILS" field is always "Waiting for provisioning to start".

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:

1. Install 2 ACM hub, hub1 and hub2 which enabled siteconfig component
2. Provision a mangedcluster(vm008) using IBI+Clusterintance+GitOps
3. Migrate resources (BareMetalHost/HostFirmwareSettings/ImageClusterInstall/ClusterDeployment) from hub1 to hub2
4. Migrate clusterinstance from hub1 to hub2

Actual results:

1. oc get clusterinstance -A
   NAMESPACE   NAME                    PAUSED   PROVISIONSTATUS   PROVISIONDETAILS                    AGE
   vm008       vm008-clusterinstance            Unknown           Waiting for provisioning to start   3m46s

   Expected results:

1. oc get clusterinstance -n vm008
   NAME                    PAUSED   PROVISIONSTATUS   PROVISIONDETAILS         AGE
   vm008-clusterinstance            Completed         Provisioning completed   38d

   Additional info:

More details about whole process in doc: https://docs.google.com/document/d/1ATzPqU4YxlTzQtupvg17EhAmIOttt8vJ8uNlb6VyHNU/edit?tab=t.0
Some discussion in slack: https://redhat-internal.slack.com/archives/C09LBKEHZB4/p1760640041672229