Documents issued earlier remain valid until the expiry date printed on them, and identity cards without a chip cease to be valid by 3 August 2031 at the latest under Regulation (EU) 2019/1157. For regulated institutions, that means years of verifying two generations of documents, with two entirely different technologies, inside the same onboarding flow. 

Source: https://www.cincinnati.com/press-release/story/112241/romania-becomes-an-early-test-case-for-the-eus-digital-identity-wallet-as-december-deadline-nears/