Update existing clusters for auto-scaling

I have verified my auto-scaling configurations by creating a new EKS anywhere cluster on vSphere with auto-scaling using the cluster auto-scaler deployment. It works perfectly in tandem with HPA.

However, when I try to edit the cluster configuration of an existing EKS anywhere cluster on vSphere with auto-scaling configurations (minCount/maxCount) in the exact same manner as above and apply updates through upgrade command., the upgrade goes through without reporting any errors. However, when I observe the cluster configuration, auto-scaling configurations are absent.

Is this a bug or this is how it's supposed to happen. In other words, can we apply auto-scaling configurations to an existing cluster which was not created with auto-scaling parameters

thanks,

Ambar

Begin with the cluster configuration and upgrade command paths for an existing vSphere cluster, then compare them with creation using minCount/maxCount and the cluster auto-scaler deployment. Reproduce the update and verify whether the existing cluster retains the auto-scaling configuration; document whether applying it after creation is supported.

Written by the indexing model from the issue text.