UltimateBet Rakeback/Bonus Question?

[Gotmilk]

OK so I got rakeback on UB, and the funny thing is it seems to be worth more than the deposit bonuses as it accrues faster than one clears the bonus. My question is this: Does UB bonus money come out of the MGR like Party bonus money, or can you clear bonus while earning rakeback? If it comes out of MGR it seems it would be best to decline all bonuses. I apologize if this has been discussed before. Thx