QTR-Quadtone RIP

Great new site : very appealing.
Thanks for the new release Roy. Meanwhile some questions :

1. Does one need to delete the past version and if so the "cleanQTR" 
soft is a must or not ?
2. When one has curves and ICC profiles how do you save and reload them 
in the new version (for ICC no problem, but curves) ?
3. Can you further explain the new Create-ICC : it supports general 
data file, but the help does not show how should the file look like (I 
stayed at the PM format one). I understand you are to fix the softproof 
AtoB but BtoA is correct or not ? What about media white and BPC ? 
Still perceptual conversion ?

Thanks for the great work.

Olivier