Kernrechtsfrage
Whether the complaint against the cantonal interlocutory decision was admissible under Art. 93 BGG
Extrahierter Entscheid
The decision did not cause an irreparable legal disadvantage; the complaint was therefore inadmissible.
Extrahierte Begründung
The ordered cost advance could be challenged later with the appeal against the first-instance final judgment. The cantonal remand decision was binding on the lower court, so no separate irreparable harm arose.