Full length campaign. From DH to TD

By Silver Night, in Dark Heresy Rules Questions

Hello everyone. First of all, please excuse a dabbling english, i will try my best to explain crystally my point.

On the beginning, it's quite simple. I master a campaign with an objective. Take my players from Dark Heresy to Rogue Trader. They'll do every step form barely human acolytes to Ascension. But becaus there's alway s abut. How can i convert/continue from the last stage of ascension to rogue trader. I d'ont speak about inside game trick, i have some ideas. But in term of rules? I just let them follow the path they want, acquiring new traits and just upscaling a +20 bonus to +30 if it's takeable again? Or some of you have already tried that and have some tips?

Thank you all!