Welcome to the Forum @Efa_Mboto 
Naty here, stepping in for my Marie.
Sections and dependencies are currently not included when exporting a project; apologies for the inconvenience! We already have a thread requesting this functionality in the #productfeedback category. I would encourage to upvote for it in case you haven’t yet: Include Sections and dependencies to CSV Export
Please, let me know if there is anything else I can help you with! Have a nice day!