An update allowing you to hide archived customers will be deployed on Monday.
Thank you for your patience on this feature request. KashFlow Canvass launches in April to replace the Customer Forum you find yourselves on today. Our new user community will allow us to interact far more often with customers and provide live updates on changes in the system and discussions with the product team. Read more here http://www.kashflow.com/blog/kashflow-announces-launch-of-canvass-in-spring-2015/
KashFlow Product Team