(10)To allow trading venues, APAs and investment firms to implement the required changes into their systems, certain amendments introduced by this Regulation should apply from 1 January 2024. To ensure legal certainty and continuity for transactions executed before 1 January 2024 but which are published or amended after that date, Articles 2, 6 and 13 of and Annex I to Delegated Regulation (EU) 2017/587 as applicable on 31 December 2023 should continue to apply to those transactions.