1. The own-fund items of related undertakings referred to in Article 335(1)(f) shall be considered as part of the reconciliation reserve at group level.
2. Notwithstanding paragraph 1, where practicable and where the own-fund items referred to in paragraph 1 materially affect the amount of group own funds or the group solvency, the participating insurance or reinsurance undertaking, the insurance holding company or the mixed financial holding company shall classify these own-fund items into one of the three tiers based on the criteria set out in Title I, Chapter IV, Section 2.