[SOLVED] Projects hierarchy and Reports

Hello,

I would like to know if and how can we manage le Project level inside a report.

I'll try to explain myself:

I would like to use the report "Monthly planning project/resource" to provide my company's Timesheets to send them with the bill to our customers.
As we cannot filter by Customer, I created a "Master Project" that corresponds to my customer, but under this level, now I find two hierarchical project levels and in my reports I can only get the lowest one:

Example:
Customer : S&H (Des Systèmes et des Hommes)
Project (billed) : CNP-MIGRATION
Sous-Project 1(Management) : OCN-Migration
Sous-Project 2(Management) : AMZ-Migration
Sous-Project 3(Management) : OCN-Fil de l'eau
...

So, I've created this hirarchy :



But in my report I get this :


And I would like to have the Information at the first project level : CNP-MIGRATION.

Is that possible?

Thank you for your help.

Regards,
Mcanuto