A320, this reply is on the spur of the moment , so I don't know if I'm totally correct, but I'll check it up
As far as I remember the conversion table if you have an ATPL, you'll get a JAA ATPL, restricted to copilot.
The resriction will fall when you do your skill test as PIC. Such a situation would arise for a german ATP where now you can have an ATP even as a copilot (ATPL A2)
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