Like to know how to export "titles" and "legends" of Lightroom6 C&C photos to an external disk.

How to export photos with "titles" on top of the photo and "legends" on bottom of the photos  in the Lightroom bibliothek to an external disk intact?  We have 693 photos to export with individual "titles" and "legends".  To date, no one seems to know how.  Thanks for comments.