I were thining about using the copy option in Ranish as well, but were not sure if that would work with different sizes.
BTW: Got it up running now, but had to enter registration info over for avast! and save a config backup (old disk) with ZA and the restoring that (new disk). I don’t know why those programs info are not copied. Seems like all other programs work like they whould (and I have done this before w/o trouble the last time I changed my harddisk 
Do they use the serial-number as part of the registration or something?