Action runner controller upgrade , recommended practice for existing runner deployments

[shreyasGit]

Hi,
this link lays out steps for upgrading ARC - https://github.com/actions-runner-controller/actions-runner-controller/blob/master/charts/actions-runner-controller/docs/UPGRADING.md
to copy CRDs etc.

the question I have is what is recommended practice for existing runner deployments we have.

Scenario -

1. we have runner deployments in different namespaces (we do some kind of blue and green runner deployments)
   so before upgrading Action runner controller to new release/version
2. should we delete the earlier runner deployments/horizontalrunnerautoscaler and then install them again after upgrade?
3. or we should keep them as it is.

till now we were thinking that not touching runner deployments is fine. We used webhook Autoscaling
But after upgrading to 0.25 version of release realized, that there are few runner pods running, which are not associated to any runnerdeployment/horizontalrunnerautoscaler , they both show min/desired to 0.
but pods are still running , and killing them launches them again.

Hence this question, what is recommended practice.

Thanks
shreyas