[HueyHq]

Seems rev105 been asking about this for the last year.

Well, I guess we should get it done for him!

Do you want to do it, or shall I?

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Per this post it is supposed to. If I manually enter dateadded in the nfo it is not recognized when I add that movie to the library.

I am going to keep trying to get XBMC to pick up the date from the nfo. Does anyone else have any ideas?

In my experience, XBMC refuses to read an NFO file once the movie has been entered into the database.
If you are trying to modify the NFO to an existing movie, you need to right-click the movie, and select Remove From Library, then initiate a library update. I'm not sure if you need to perform a Clean Library in between.
Alternatively, try a movie that hasn't been read into XBMC
Let us know if you've already tried that, or, you do try it and it works for you!