Hi Auchy
Even if amendment 6 of JAR FCL 2 was implicated by the UK CAA, you would only have to do 5 of the ATPL exams, that’s if the original exams you done were JAA ATPL, you would get a credit for the rest.
But as stated earlier the UK CAA are still using edition 3 of JAR FCL 2, so at the moment you can do the IR exams and once you have your IR(H) you will have an ATPL(H) theory credit. This is assuming your JAA CPL(H) was issued by the UK CAA, which looking at your location I presume it was.
I also used the Bristol GS question bank, which was excellent, I believe Paco also has an exam question bank.
It’s a bit of a ball ache having to do the theory exams again but once you’ve got your IR(H) it makes it all worth it.