does pulumi delete the resource on the provider if it was imported? Is there a way one could tell?

Do you mean you did

import: "abc123"

on a resource to import it into your Pulumi stack - e.g. https://www.pulumi.com/docs/intro/concepts/programming-model/#import? If so, yes, if you then do a

pulumi destroy

or otherwise modify the resource code in your Pulumi app that would delete it or cause it be replaced, Pulumi will delete the original resource.

👍 glad I asked, I kind of got around this by running

pulumi state delete

to remove it from the pulumi state

"import" essentially means "assume ownership of". 🙂