I'm using Exiftool by Phil Harvey to copy the exif tags from my NEF file to the JPG extracted one.
This freeware command line tool is really great, it can do so many things with raw files. I used to take pictures in Raw+Jpg mode on my Nikon, now I just take Raw, and create Jpg with exif thanks to exiftool.
The command line I'm using for this purpose :
exiftool(-b -jpgfromraw -w %d%f.jpg -ext nef -execute -tagsfromfile @ -srcfile %d%f.jpg -overwrite_original -common_args --ext jpg).exe
just drag'n'drop the folder that contains your photos on the exe icon (renamed this way) and you are done.
Very convenient.
