I am also in the UK PPL/JAR CPL training system, having passed UK ATPL's and JAA CPL skill test for issue of a JAA CPL(R).I now need an I/R so I am currently holding back my JAA CPL(R) application form whilst I await an answer from the CAA to the question of whether I can still add a (Cheaper) UK CAA I/R to my UK PPL after my JAA CPL(R)has been issued - as has been suggested the I/R then apparently gets transfered for a small fee to your JAA CPL(R).
So far I unfortunately have had conflicting info back from the CAA. By phone they said I could do it, but when I asked them the same question in writing(not wanting to commit myself to the wrong course on the basis of a phone call alone!) the response I received was somewhat ambiguous with reference to 'JAA CPL holders follow JAA route with the 5 hr reduction' so my question still awaits clarification.!! I'll let you all know the answer when I get it!!! Anyone else followed this path?