Architecting and designing : Business Process Analysis (BPA) : BPMN : Importing and exporting BPMN 2.0 model information
  
Importing and exporting BPMN 2.0 model information
You can export a BPMN 2.0 model to a BPMN interchange format XML file. The file can then be imported in another program that supports BPMN interchange XML format. You can also import BPMN 2.0 model information from a BPMN interchange format XML file or a BPMN format model ZIP file.
See also
Exporting BPMN diagrams to BPMN interchange XML format files
Importing BPMN Interchange XML format files to BPMN diagrams
BPMN interchange set reference
BPMN