This popup form is used to update all of the 
tasks that you have permissions to update. The update will recalculate the tasks’ effort/duration, start date and end dates.If you select the Reset task GL numbers option then any project Default GL numbers will be copied into the the tasks’ GL Number.To proceed with the update click the “Update all tasks” button at the bottom of the form. The process will run in the background on the server and update the progress bar as it progresses. It may take a while to complete if you have a large number of tasks or complex linkages between tasks.Click the “Cancel” button if you do not want to update all your tasks.
tasks that you have permissions to update. The update will recalculate the tasks’ effort/duration, start date and end dates.If you select the Reset task GL numbers option then any project Default GL numbers will be copied into the the tasks’ GL Number.To proceed with the update click the “Update all tasks” button at the bottom of the form. The process will run in the background on the server and update the progress bar as it progresses. It may take a while to complete if you have a large number of tasks or complex linkages between tasks.Click the “Cancel” button if you do not want to update all your tasks.