1. The judgment opening insolvency proceedings as referred to in Article 3(1) shall, with no further formalities, produce the same effects in any other Member State as under the law of the State of the opening of proceedings, unless this Regulation provides otherwise and as long as no proceedings referred to in Article 3(2) are opened in that other Member State.
2. The effects of the proceedings referred to in Article 3(2) may not be challenged in other Member States. Any restriction of creditors' rights, in particular a stay or discharge, shall produce effects vis-à-vis assets situated within the territory of another Member State only in the case of those creditors who have given their consent.