DNN pages have been setup to be used as Page Templates creating more DNN pages. These pages are attempted to be exported using Edit Page >>> Export Page.

However, only a blank dialog appears when attempting to export these pages.  The dialog is just blank; nothing appears in the dialog.

 I looked on the server in \Portals\_default\Templates just to be sure the work was not exported.  As expected, the templates were not exported.

Am I doing something wrong to export page templates?  Or, is this a problem with DNN?