Article 4 (1) gives a deadline of 2017 which was then extended to 2018.
copy paste
Existing national pilots’ licences
1. JAR-compliant licences issued or recognised by a Member State before 8 April 2012 shall be deemed to have been issued in accordance with this Regulation. Member States shall replace these licences with licences complying with the format laid down in Part-ARA by 8 April 2017 at the latest.