Is there a supported way of moving a stack to a different project? I've not found anything other than export stack -> edit urn to new project -> import stack, then redo all the config secrets which is a huge pain to do. Surely there must be an easier way?

I think

pulumi stack rename

should handle moving a stack to a new project name.

Yes, rename should do it. If you need to move to a different account (in the Pulumi backend) you need to do it through the web console.

Oh, well that should be much easier than what I was thinking. Not sure how I missed that, will give it a go. Thanks both.