If you win entry to it again, then it will just credit your account with 1 tournament dollar. Same thing if you go and unregister from it.
YOu won't get real money
back, just a tournament dollar that has to be used to enter tournaments, not used in cash games.
I am assuming you played the satellite that costs 50FTP, there is also a 30 cent sit and go that you can enter to win this. If you win that tournament dollar, you can then use it to re-enter more of those 30cent sit and gos.
If you don't unregister and you are not around for the daily dollar, then you will be entered and blinded out, so do make sure that you unregister before start time.