Hi there,
When one round is over than new round starts. This system is because of prises which you can get if you win top five in the world and it is splitted in rounds. Every player starts from 5 respect and everything is deleted just profile and credits stay the same for all rounds. And I can say also this that if your account if inactive for a cupple of rounds it can be deleted, so be aware of this.
If you are new in this game, you can read this tips for playing which you can found here and it might help you a bit with gameplay.
Thanks and have a nice criminal life,
Dahakka
We are notthing, if we are only that, what we are for others!