(1) Explain your problem, don't simply post "This isn't working". What were you doing when you faced the problem? What have you tried to resolve - did you look for a solution using "Search" ? Has it happened just once or several times?
(2) It's also good to get feedback when a solution is found, return to the original post to explain how it was resolved so that more people can also use the results.
Hello Chema,
I would suggest to check your "Planned Start" and "Planned Finish" dates.
Try to align these dates with the baseline dates on one activity and see if it solves your problem.
If so, you can use a global change to set all the activities planned dates.
Jean.