From Basecamp to VisioPlanning  

The data transmitted to VisioPlanning's interface is about the projects, subprojects, tasks and employees contained in your Basecamp account. The projects, subprojects and tasks are placed in a "tree view" dropdown menu and in the workers' interfaces.
From VisioPlanning to Basecamp  

The data VisioPlanning updates in Basecamp is about the lights associated with the tasks and their priorities, thanks to a code inserted into the tasks. You can also add, edit or close tasks. To access Basecamp from VisioPlanning, just click on the desired tasks.