Kernrechtsfrage
Whether the cantonal court may warn only about a possible reformatio in peius regarding insured earnings and accept a withdrawal limited to that point.
Extrahierter Entscheid
No. The warning had to cover the whole appeal, because insured earnings are only a component of the pension dispute and not a separately finalizable legal relationship.
Extrahierte Begründung
Under Art. 61 lit. d ATSG, a party must be given a proper chance to comment and withdraw the appeal before a worse outcome. Since insured earnings are part of the contested invalidity pension, they cannot be isolated and finally disposed of by partial withdrawal before final judgment on the whole dispute.