I have a slightly strange request. I have access to a set of geo-ref'd PDFs that have multiple layers within the file. As touched on in other threads, there's no good way (at this time) to turn on/off layers from a PDF in QGIS. So I end up turning off/on the layers I want (in Acrobat) and then printing a new PDF file of the same size/resolution (however, the geo-reference metadata is lost when I print the new PDF).
So what I'd like to do, is import the geo-ref'd PDF into QGIS, export the CRS data, and then import the non-ref'd file and apply the CRS from the original file.
Can this be done? If so, how? And if you know how to control PDF layers within QGIS, let please let me know.