As of my last update in October 2023, Lucidchart does support importing and exporting BPMN (Business Process Model and Notation) diagrams in XML format. This feature allows users to create and share BPMN diagrams while maintaining compatibility with other BPMN tools that use the XML standard.
However, it's crucial to verify this information on the official Lucidchart website or their support documentation, as software features and capabilities can change over time.