Key legal question
Whether the appeal against the remand decision was admissible under Art. 93 BGG
Extracted holding
No; the remand decision caused no irreparable legal disadvantage and did not save significant time or costs in complex evidence proceedings.
Extracted reasoning
A remand for further investigation and a new decision is usually only a prolongation of proceedings. It is only immediately appealable if it materially constrains the lower authority's discretion, which was not the case here.