As I said, it's not the simplest work around (Apple
and Motorola really should fix this, it can't be that
hard), but addresses and birthdays with be in your
phone.
Well, I spoke to Motorola Tech Support about this (and other SLVR problems I'm having). Their position is that it's a problem with iSync, so it's up to Apple to fix it. Could be true, since the Windows software seems to not have this problem.
Anyway, it looks like it's up to Apple to figure out how to make this work, if they even care.
BTW, I also found out that since my phone was intended for the German retail market, Motorola won't honor the warranty in the US. So, beware of buying these phones off of eBay. On the bright side, that means I don't have to worry that flashing the firmware (to fix my Bluetooth problems) will invalidate the warranty.
iBook G4/1.33 Mac OS X (10.4.6)