rakeback full tilt + leaderboard bonuses

[umdpoker]

i am getting rakeback at full tilt. i am considering making a run at the leaderboard for tourneys. if i actually make it, will my prize be deducted from mgr? i know deposit bonuses are deducted, but i figured their special rewards might be treated differently. if so, what happens if i actually create neg. rake after deposit + leaderboard bonuses are added? i am trying to figure out if i should spend more time on tourneys or cash games, so any help is appreciated.