You cannot open a raw-file in PS via LR Edit in. It will open as a Tiff-file.
?
Edit In with a raw produces a rendered image via ACR (when it's working). At that point it's not a TIFF or JPEG or PSD, it's floating in memory. Not until you select "
Save" and pick the format do you get a TIFF, or PSD or JPEG.
The only Adobe product that '
opens' a raw is ACR or LR in that you see a preview of the current rendering instructions. It's just a preview at this point and not a raw, TIFF, PSD etc. It could be however.