Gantt Bar of Updated Baseline Refused to Show up

@All

Hi @All,

One of our Primavera Users came to me with this problem.

• He updated the Baseline to add an activity (an activity was added to the baseline schedule).
• He pressed F9 and wal-lah! the baseline Gantt bar showed up underneath the current.
• He then proceeded to add a second activity (with Unique Activity ID), same as before, to the baseline.
• He pressed F9 and wal-lah! Nothing happened.
• The expected baseline Gantt Bar underneath refused to show up. He tried it several times, demonstrating it to me and it won't show up.

What can be the problem there?

Thanks,

Rufran (101415)