Gantt Chart task duration behavior when extending dates

Products

• Clarity PPM On Premise
• Clarity PPM SaaS

Issue/Introduction

In the Clarity Gantt, the duration field behaves differently when extending the start or finish dates.

If you stretch the task Gantt bar finish further in the future, the task duration is extended accordingly.

If you stretch the task Gantt bar start further in the past, the task duration is not extended.

Is this expected?

Resolution

The Gantt chart behaves the same as the task timeline in MUX. The behavior is working as designed and documented:

Task Duration in Timeline / Gantt

Adjust Task Duration in the Timeline
You can hover over a task to view the dates and time associated with it. You can then drag a task to adjust its duration, start dates, and finish date. When you drag a task, the associate summary task and phase durations also automatically adjusted.
A couple of rules that apply when you change the task dates are given below:
When you change the Task Finish date the Task Duration is updated. However, the Start Date does not change.
When you change the Task Start date the Task Finish date is updated. However, Task Duration does not change.