Primavera provides several documents that detail how data is mapped between P6 Professional and other data formats and applications. You can exchange data between P6 Professional users using XER (Primavera's proprietary exchange format) or XML files. You can also exchange data with Primavera Contract Management (formerly Expedition), Primavera Contractor, Microsoft Project, and Microsoft Excel users. Click the links below for the associated import/export data mappings.