Existing organizations, which were approved under Subpart F and SUbpartea G of Part M of Regulation (EU) 1321/2014, must obtain a new approval under Part-CAO (combined organization) by 24 March 2022 at the latest.
More detailed transition instructions have can be found here https://www.caa.ro/uploads/pages//NN_5_informare%20tranzitie%20rev.1.pdf
Direct transition to an approved organization under Part-145 is not possible.
Procedure related to PART CAO authorization can be found here
Forms used in the process can be accesed via link https://www.caa.ro/en/pages/formulare-dn%20 point 10