I don't, but why not choose the "Render with Lightroom" option when you edit in CS6 from LR6? That way, Lightroom's in-built ACR is used, which of course will render all LR6 settings, and pass a TIFF (or PSD, your choice) to CS6. The downside is that it's slightly slower to open an image in CS6, and the TIF is created when the image is opened in Photoshop, not just when the image is saved in PS.
If you don't get the "Render with Lightroom" option when you open in image in CS6 from LR6, then probably you've checked "Don't ask me again" in the past. Edit -> Preferences -> General tab and click "Reset all warning dialogs" and it should ask you again next time you open an image in CS6 from LR6.