Not sure whether this helps, but I didn't add anything to my Poser 12 .ini file and didn't change the .xml file. I simply closed the Poser Library (as you recommended) and opened my Edge browser with the coordinates RedPhantom noted.In Edge (P12), my libraries show exactly what I had in P11 plus everything I added in P12. I didn't edit my LibraryPrefs.xml file. All-in-all, I'm guessing the P11 external library coordinates exist in P12, even though the P12.ini file doesn't tell one how to find them.