NX PDF dataset references wrong specification after export.

User exported a PDF and the dataset was referencing the specification from a previous export.  When the User attempts to delete the dataset it raised an error that the dataset was being referenced and could not be deleted.

One workaround is to Cut the dataset, then open the drawing in NX and do the Export PDF again, but watch the dataset name in the dialog and make sure it's the correct name. If it is, then complete the export and double check the dataset.