I'm trying to migrate from Azure to Azure Native following this guide - https://www.pulumi.com/docs/intro/cloud-providers/azure/from-classic/#move-resources-from-classic-azure-to-azure-native and I must be missing something obvious. I've run pulumi import and that worked as expected, updated my code, but when I try and run Pulumi up it wants to delete the new Azure Native resource group, rather than showing no changes. What am I missing?

Which property?