Scenario

1. Clone the rhel9-server-small VM template

2. Detach the rootdisk disk from the clone template

3. Add new disk to create the rootdisk disk with Storage class setting.

4. Update the following filed:

objects.spec.dataVolumeTemplates.metadata.name
objects.spec.template.spec.volumes.datavolume.name

5. Create VM from clone template

When you click 'Quick create VirtualMachine,' the storage class settings are retained from the template,

※※ Problem ※※
but when you click 'Customize VirtualMachine,' the storage class settings are lost.