Key legal question
Whether Swiss courts remained competent after the children's relocation to Singapore
Extracted holding
Yes. Because Singapore is not party to the relevant Hague Child Protection Conventions, Swiss jurisdiction remained preserved under perpetuatio fori.
Extracted reasoning
The children had their habitual residence in Switzerland when proceedings began. For a move to a non-contracting state, Swiss jurisdiction over child-protection measures is maintained; the same applies to custody and access issues, though not necessarily to maintenance.