Comment 5 for bug 168958

No, this "feature" isn't gone: inkscape:export-filename and sodipodi:absref are still created. Also, although sodipodi:docbase is no longer created, it's still preserved when editing old files.

Bug 170966 suggests putting the export hints in preferences.xml, removing the need for inkscape:export-filename. The same technique could be used to eliminate sodipodi:absref.