kubectl apply -f fleetWithFAS.yaml; remove replicas, edit label ; kubectl apply -f fleetWithFAS.yaml - leads to no rolling updates

fleetWithFAS.yaml

apiVersion: "agones.dev/v1"
kind: Fleet
metadata:
  name: flat-example
spec:
  replicas: 5
  scheduling: Packed
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 1
  template:
    metadata:
      labels:
        foo: bazar
    spec:
      ports:
      - name: default
        portPolicy: Dynamic
        containerPort: 26000
      health:
        initialDelaySeconds: 30
        periodSeconds: 60
      template:
        spec:
          containers:
          - name: simple-udp
            image: gcr.io/agones-images/udp-server:0.16
---
apiVersion: "autoscaling.agones.dev/v1"
kind: FleetAutoscaler
metadata:
  name: server-autoscaler
spec:
  fleetName: flat-example
  policy:
    type: Buffer
    buffer:
      bufferSize: 5
      minReplicas: 5
      maxReplicas: 10

kubectl apply -f fleetWithFAS.yaml;
remove replicas, edit label ;
kubectl apply -f fleetWithFAS.yaml
This steps leads to no rolling updates