About Optimization and Activity Statuses
The Optimizer can change the status of activities to obtain the best scheduling.
When you click the Load Optimizer button in the Service Region List view of the Administration - Scheduling screen, the Optimizer loads activities (with associated statuses) from the Siebel database. Likewise, when you click the Load button in the Activities view in the Service Region List view of the Administration - Scheduling screen, the Optimizer loads the activity (with the associated status) from the Siebel database.
If you change the status of an activity, immediately click the Load Optimizer button or the Load button, and click the Optimize button in the Service Region List view of the Administration - Scheduling screen, then the changed activity status is in effect after the Optimizer runs.
However, the Optimizer can change the status of activities. So if you change the status of an activity and do not click the Load Optimizer button or the Load button, then the changed activity status can revert to the status value in the Optimizer cache if the Optimizer runs again.