I extract and edited the file with infinity engine item maker, but now I just follow how you did and extact and export it with shadow keeper. But now I tested it and its working vs kobolds but when I wanted to hit a Rakshasa It says immune to my damage .. I have a +4 dagger and all the ability in the file weapon seems correct to be +4. ?
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Maybe it's because I hate drows more than I hate Humans - Jarlaxle to Entreri