Kernrechtsfrage
Whether the cantonal proceedings violated the right to be heard by denying file inspection and a second exchange of written submissions.
Extrahierter Entscheid
No violation was established; the appellant had an opportunity to inspect the file and no reply-worthy submission required a second exchange.
Extrahierte Begründung
The court found that access to the file had not been refused and that the IV office had waived a substantive response, so there was nothing meaningful to replicate.