How to export path breadcrumbs
Features: Check if you have Path Breadcrumbs module checked in Features Settings (screenshot below). If it was checked and you still do not see it in the Features components list than something else is amiss.





Export: As for the direct export of Path Breadcrumbs, you can find "export" link while clicking on "edit" in path breadcrumbs actions list (screenshot below)



Hope this helps.