If you had taken exams at a conservatory under the old system, you would have some papers to present to have some of your exams recognized under the new one, but since you have never taken exams, even with an eighth-year level of preparation, I infer that you will still have to take all the exams.
Ahhh so if you have taken exams up to the fifth year, you must go to the conservatories where you took the exams and request an extraction. They will issue a document stating which exams you took at that conservatory, on what date, and with what grade. In this way, you can go to the conservatory you wish to attend, enroll in the new system, and ask the commission to recognize some of your exams. The recognition of exams then depends on the commission. Nowadays everything works just like it does at the university.
1. Performance of a Prelude and Fugue from "The Well-Tempered Clavier" by J. S. Bach; 2. Performance of two studies of different techniques; 3. Performance of a Sonata by L. van Beethoven, excluding Sonatas op. 49 no. 1 and 2, op. 79; 4. Performance of a piece of the Candidate's choice up to but excluding Debussy; 5. Performance of a piece of the Candidate's choice from Debussy onwards; 6. A sight-reading test; 7. Performance of a piece assigned by the Commission, following three hours of study in the classroom.