How to *correctly* deploy & modify AppSets

[armenr]

2 very straightforward questions about ArgoCD ApplicationSet manifests:

1. When shipping a new ApplicationSet manifest, is the intended use supposed to be kubectl apply or kubectl create?

2. IF an existing ApplicationSet spec changes -- specifically if we change spec.generators.git.revision - for that existing AppSet...are we supposed to run kubectl apply or kubectl update or kubectl replace?

Thank you for any help or guidance. I have read the documentation for k8s and what the difference is between each of these commands from a high level, but I am trying to understand how these choices practically affect our GitOps workflow.