Pods Not Being Evicted From AKS Cluster

I have an AKS cluster that has pods scheduled on it by means of the following helmsman command:

helmsman --keep-untracked-releases --debug --target release-name -f ./state_definition.toml

Once this completes, the application is deployed successfully to the cluster and 2 new pods are created but the existing pods for the application are not evicted by the scheduler

kubernetes version 1.31.1

Can anyone suggest a good starting point for beginning to look at this problem?