Navigate Here: Projects > Browse Projects; select a project > Implementation tab > Schedules tab; Enter into Schedule Gantt Chart, click Export to Primavera icon 
on the tool bar
CIPAce provides a feature that enables you to work on the same project schedule in both CIPAce and Primavera.
You can save the schedule file in Primavera XML file format, and then import it into Primavera to create a new schedule or update the existing schedule.
The tasks and resources of the current schedule will all be exported so you can modify them in Primavera.