rotormad,
AFAIK, you can do it however you like. I know people who've transferred the lot, and some who've done as eyeinthesky. I've kept everything in my PPL logbooks, since I can't think of a good reason to get a new one. The rule is that you must keep a logbook; the details, format etc are up to you.
However, what I really really really want is a logbook that allows me to record rotary, f/w, microlight etc time, separating them out, and also separating night/day, single/multi engine etc etc, but giving me a total of the lot when I need it. And I want it in a traditional logbook - computer logging doesn't feel the same; I need my thumbprints and oil stains and tippex for it to be real. I think I'd need to get a huge blank book and make my own columns. But how many columns, and what's the best way of doing it? Any ideas anyone?