If you hold a valid JAA licence, it really doesn't matter which exams you passed. Essentially, you received a credit for your UK exams during the JAA transition period, which is the JAA ATPL credit referred to. Your JAA licence will be accepted as an EASA licence and continue as before.
If you hold a UK licence then you will have to meet the JAA conversion criteria to convert it to a JAA licence. I hold both, they issued one on the strength of the other.