Hi Baracuda, Thanks for that, sorry I didn't see your reponse until now. I had been checking in for the first week or so and had given up on it (though your response is dated the same day?). The providers initially weren't very forthcoming and referred me to the introductory agent. Unfortunately he couldn't offer any guidance either due to being 'execution only'.
Anyway I eventually managed to discern that some providers (Irish Life) can convert to PRSA AVCs and some cannot or will not (Zurich and former Quinn). It would seem that I will have to leave dormant the PRSA that cannot be coverted, set up a new PRSA AVC in its place (assuming I wish to continue) and perhaps transfer the dormant to the new one.
The charges are slightly lower on the occupational scheme, however I'd like to also keep a couple of other schemes going for diversifation reasons. Thanks again.