Paco is probably the best person to ask.
Essentially, your ATPL exam credits have now expired (it being 9 years ago, without an IR). Under the old JAR system, the number of exams that you would've had to retake would have depended upon the JAR Amendment that was currently in force when you first say your exams. I suspect that you might have got away with just retaking the IR exams.
However, under EASA, I think that has all changed. In order to get ATPL credits (which, basically, there's little point flying on the NS without), you will have to resit most of the ATPL exams again. Your only consolation is that they are much easier the second time around. (As long as you have kept all of your old notes!)