When working to improve a process, it is not enough to implement a solution and stop. Without a plan to maintain the gains, at the first sign of trouble, systems will revert to what has been comfortable in the past. That usually means a return to some past operating procedure. To prevent this, there must be a linkage of the improvement to the management system. This involves monitoring important metrics, documenting methods and procedures, and providing a strategy for dealing with problems in the future.