Lightroom 5/7 has changed behaviour in that When the Edit in "Photoshop CC 2014" in invoked, the raw file (NEF) is now opening directly in the Photoshop window as a NEF file, this is instead of a PSD or Tiff rendering being opened. Changes are made in a new file within Photoshop and cannot be returned to Lightroom by the "Save" procedure. The only way to get it back to LR is to save the new file and reimport it to Lightroom. No new copy file is generated in Lightroom. This behaviour is not replicated when the Edit in point to Elements 12, this works as it should.