i’ll see if I can reproduce it

Ok i reproduced it .. consider this:

package main

import (
        "log"

        "<http://github.com/pulumi/pulumi-aws/sdk/v2/go/aws/iam|github.com/pulumi/pulumi-aws/sdk/v2/go/aws/iam>"
        "<http://github.com/pulumi/pulumi/sdk/v2/go/pulumi|github.com/pulumi/pulumi/sdk/v2/go/pulumi>"
)

func main() {
        pulumi.Run(func(ctx *pulumi.Context) error {
                policy, err := iam.NewPolicy(ctx, "pulumiTestPolicy", &iam.PolicyArgs{
                        Name: pulumi.String("pulumiTestPolicy"),
                        Policy: pulumi.String(`{
                                "Version": "2012-10-17",
                                "Statement": [
                                        {
                                                "Sid": "ListAll",
                                                "Effect": "Allow",
                                                 "Action": [
                                                        "s3:ListAllMyBuckets"
                                                ],
                                                "Resource": "*"
                                        }
                                ]
                        }`),
                })
                if err != nil {
                        log.Fatal(err)
                }

                // Export the name of the bucket
                ctx.Export("policyARN", policy.Arn)
                return nil
        })
}

if i just change the

Name

and run

pulumi up

, all is good and the old policy is deleted and a new one with the new name is created as expected

If i change the

Name

and introduce an error at the same time such as a typo in the policy itself, it will delete the old policy and fail to create the new one - but Pulumi still tracks that the old policy exists and so even fixing the policy JSON fails as it can no-longer delete the policy it believes still exists

@gentle-diamond-70147 does this seem like a bug? was surprised to find myself in a state where the resource disappeared altogether without warning (especially as the Pulumi state machine is unaware of it)