1. Where an obligation has been honoured in a Member State for the benefit of a debtor who is subject to insolvency proceedings opened in another Member State, when it should have been honoured for the benefit of the insolvency practitioner in those proceedings, the person honouring the obligation shall be deemed to have discharged it if he was unaware of the opening of the proceedings.
2. Where such an obligation is honoured before the publication provided for in Article 28 has been effected, the person honouring the obligation shall be presumed, in the absence of proof to the contrary, to have been unaware of the opening of insolvency proceedings. Where the obligation is honoured after such publication has been effected, the person honouring the obligation shall be presumed, in the absence of proof to the contrary, to have been aware of the opening of proceedings.