Ne'er mind - editing this text to hide my shame 😄
Essentially, created a new stack for a completely new state backend and new project and was shocked to see that it tried to import a completely unrelated resource.. but I had forgotten to remove `{import: xxx}`from customresourceoptions of the resource i was trying to create (due to keyvaults being nasty about being deleted and such) 😄 Scared the living shiznit out of me, but glad it had a logical reason.