No matter how you like to participate in developer communities, Pulumi wants to meet you there. If you want to meet other Pulumi users to share use-cases and best practices, contribute code or documentation, see us at an event, or just tell a story about something cool you did with Pulumi, you are part of our community.

Pulumi Community

On a whim, I've just tried adding "import: null" to the opts of all the resources that Pulumi was trying to import but shouldn't have been. Problem solved! Still looks like a bug, it's caching old opts between runs of preview?