My Saved Data After a Jailbreak

I have a lot of music saved, as well as notes, calendar events, tasks (in an app), many hours of MotionX Poker progress, and random other settings and stats.

What I'm worried about is that Jailbreaking will clear out all of this, especially the Poker save data (maybe it sounds sad, but I'm trying to get all the gems, and I played a while to unlock all the dice and wahtnot). Do I need to worry?

 

*Bump*

Answer please? This is the one thing making me hesitant to jailbreak. Thanks.