(1) From the completion of the purchase on, the purchaser is liable to the creditors of the estate, notwithstanding the continuation of the liability of the seller. This also applies to the obligations for whose performance the purchaser is not obliged in relation to the seller under sections 2378 and 2379.
(2) The liability of the purchaser in relation to the creditors may not be excluded or restricted by agreement between the purchaser and the seller.