Hi Adriana,
Greetings from Syncfusion support.
We have validated your query and currently we do not have support for Hierarchy Grid (using DetailTemplate) exporting. Since it is a known request, we have already considered the requested query as a feature and added this feature request to our database. We are always trying to make our products better and feature requests like yours are a key part of our product growth efforts.
You can now track the current status of this feature request here.
At the planning stage for every release cycle, we review all open features and identify features for implementation based on specific parameters including product vision, technological feasibility, and customer interest. Feature will be included in any of our upcoming release. We will let you know when this feature is implemented, you can also track the status of feature in above feedback link.
Till then we appreciate your patience.
Regards,
Jeevakanth SP.