Originally Posted by QuadSuited
Up in the top left corner click on Database>Database Management>Purge. Purge all the sessions and/or tournaments you want to delete. Then purge players w/o hands. After you do this go back and again click on Database but then Housekeeping this time. Check all four boxes and press Begin. You're done. Make sure your import is stopped while you do this though. You'll still see all players on the left but no sessions so be sure to press Refresh and it will clear the players list.