Cannot upgrade k8s on imported cluster

Hi there,

I’ve got a RKE cluster which I imported on a new Rancher Server after the cluster had lost its original Rancher Server. Now I’d like to upgrade the k8s version but the cluster overview in “edit” mode doesn’t show the cluster options, there’s just “Member Roles” and “Labels & Annotations”:

I guess the options are not shown by default for imported clusters, but now that this one is a true RKE cluster Rancher should recognize this and offer the options. So far for a feature request.

My question is: how do I enable the cluster options on this imported RKE cluster?

Docker: v19.3.6
Kubernetes: v1.17.4
Original Rancher Server: v2.3.5
New Rancher Server: v2.4.8