Many thanks for the replies.
Looks like I won't be doing that, then. Doing the duplicate exams would be a bit of a pain, but there's no way I'm spending three weeks of my meagre annual holiday attending the consolidation courses to hear stuff I've sat through before and doing the same old feedback questions.
If there's no advantage doing it before the 36 months are up on my IR exams, I might as well wait a few years until I really want or need it. I'll probably have more free time by then anyway.
Cheers,
Wrong Stuff