Thank you for writing.
It is possible to achieve the required behavior but it will require some heavy customizations in the printing engine of the grid. I am attaching a sample project demonstrating a possible approach. It will be necessary to create a custom print style along with special renderer and traverser printing only the currently selected hierarchical row. As the current row is being reset while printing, the Tag property of the row can be used to indicate this.
I hope this will help. Let me know if you have other questions.
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