I would like to have your confirmation about the following facts and whether are right or not

In a project with Calculation method= duration

We have a summary task with only daughter task which is a milestone

we put the milestone at 100% (completed)

we run the job update % complete

but the summary task will never be completed due the milestone duration is 0 and the formula is only based in mathematics

Summary Task % Complete = Total Detail Task Duration Complete / Total Detail

Task Duration

Is my understanding right or there is any way to force that?

Same summary task will be displayed as a milestone and at 100% complete, I suppose they use a different formula.

Which approach do you think is better to manage projects?

In a project with Calculation method= duration

We have a summary task with only daughter task which is a milestone

we put the milestone at 100% (completed)

we run the job update % complete

but the summary task will never be completed due the milestone duration is 0 and the formula is only based in mathematics

Summary Task % Complete = Total Detail Task Duration Complete / Total Detail

Task Duration

Is my understanding right or there is any way to force that?

Same summary task will be displayed as a milestone and at 100% complete, I suppose they use a different formula.

Which approach do you think is better to manage projects?

% Complete Calculation Method

Specifies the method for calculating the percent complete value for the project and tasks.

Note: If you are using CA Clarity PPM with Microsoft Project or if your company uses an external job to calculate % Complete, select manual as the % complete calculation method.

Values:

■ Manual. Use this method if you want to enter the percent complete for the project, summary, and detail tasks manually. The % Complete field is on the task properties page.

■ Duration. Use this method if you track percent complete based on duration. The duration is a measure of the total span of active working time for a task, based from the start date to the finish date of a task. With this method, you enter the % complete for the detail tasks. The % complete for summary tasks is automatically calculated based on the following formula:

Summary Task % Complete = Total Detail Task Duration Complete / Total Detail Task Duration

■ Effort. Use this method to calculate the % complete for summary and detail tasks automatically based on the work units completed by resource assignments. The calculations are based on the following formulas:

Summary Task % Complete = Sum of Detail Task resource assignment Actuals / Sum of Detail Task resource assignment Effort

Detail Task % Complete = Sum of resource assignment Actuals / Sum of resource assignment Effort

Note: If you assign a resource other than labor to a task and the % Complete Calculation Method field on the scheduling properties page is set to Effort, the effort and actuals for that resource are ignored in the calculation.

Default method of %Complete calculation is

Manual