It appears that you are allowed to bomb any factories your opponent controls, even those he has conquered? (This is not the case in WiF.) If you bomb a factory and then later take control of that land area, e.g. in a blitz phase, do you suffer the lost production? Does your opponent?
Yes you are correct (and yes that is different than WiF). Whoever controls a Factory during Builds suffers the loss (even if they did the bombing earlier).