Your existing Global Total points are carried over to any new pools joined or created after a tournament is underway. If you'd like the pool to start from scratch with everyone on zero points you'll need to set the pool up as a late starting pool.
1) Open your pool's management area
2) Click on Features
3) Scroll to "Late starting pool" and select the round that you'd like the pool to start from
Please note that this change won't instantly remove points from the leaderboard. That will be updated when the next result for the tournament is processed and the leaderboards are subsequently updated.
If you have any problems, feel free to contact us for assistance.