Kernrechtsfrage
Whether the IV office's federal appeal was admissible despite the fact that it had itself originally granted a pension and sought a worse outcome only in the cantonal proceedings.
Extrahierter Entscheid
The appeal was admissible because the office was formally aggrieved by the cantonal judgment rejecting its request for a worse outcome, and the federal court was not bound by the cantonal duty-to-withdrawal warning mechanism.
Extrahierte Begründung
The office cannot directly challenge its own decision without formal prejudice, but once the insured person appeals and the office seeks less than it granted, it becomes a losing party if that request fails. The cantonal procedural rule on withdrawal does not control federal admissibility.