Exporting attachments from a subtree
To export all attachments inside a subtree, click:
Menu: Database⁄Export⁄Subtree⁄To files
In the "Subtree to files" export dialog, activate the option 'Export attachments', and press 'Next' button.
The Next step presents an option to recurse the tree or not. You can choose to export only the attachments associated with the selected node and its direct children (i.e. do not recurse the tree), or you can export attachments of the selected node as well as attachments of all descendant nodes are exported (i.e. recurse the tree).