KOps Validate shows machine not ready to join yet joined the cluster after scaling down and scale up autosacler

[teocrispy91]

We scaled down and scaled up our master and nodepool autoscaler for our kops cluster running in V1.15.8 . But master node is ready and i am able to run kubectl commands when i run the kubectl get nodes it showing the old nodes that got terminated while i scaled down my cluster. When i run kops validte cluster validation fails showing new nodes with machine not yet joined cluster. I guess some issue with the etcd as it' showing the old ones. What steps can i take to bring back my cluster.

Update: Did kops rolling-update cluster --force --yes. But still nodes didn't joined the cluster