Exporting content with UUID Features Integration
With Features and the UUID Features Integration module it is possible to export content like nodes and terms.
To use the module you have to configure it at /admin/config/content/uuid_features (Configuration > Content authoring > UUID Features Integration).
Adding UUID support for custom content entities
Drupal's core entities are supported by default within the UUID module, but if you want to export content contained within custom entities, you will have to implement UUID support using their API. The documentation is not complete yet.
For more information please see
Adding UUID Features support for custom content entities
Until more docs are written, please refer to the
includes/ folder of UUID Features and follow one of the existing implementations.