Yep the cathay guys are re doing the training, I heard somewhere that they were re doing all the flying but that the groundschool may have been waivered if they did a short conversion course to hong kong atpl's!
And as for the qatar guys, they don't have to re do anything, they will join as second officers, I think its promotion to first officer after unfreezing the licence. However they have already been quoted the figure of at least 4 years to unfreeze the licence and get promoted, as with 2nd officer status, they will only be credited with half the actual flight time!! This is why someone I know ditched qatar after being accepted and went to ryanair instead!! I guess didnt want to spend 4 years as a safety pilot!!