Guild Wars 2

So yesterday I was walking around with my new guardian in Wayfarer Foothills when I discovered something. I was killing Dolyaks in Dolyak pass and they dropped the following item for me:

http://imageshack.us/photo/my-images/641/sinew.jpg/

According to the description the Dolyak sinew could be turned into thread, my guess thread that could be used for crafting disciplines. The description also says where this could be done, Seamstress Aina. So I started to search for Seamstress Aina to turn my Dolyak Sinew into thread, I started on the Guild Wars 2 Wiki, which couldn’t help me any further, then I searched in Dolyak Pass, since I got the drop there. Also no Seamstress Aina there. I’ve searched in other lodges in Wayfarer Foothills, also no Seamstress Aina there. So then there was just one logical other place and that was the Hoelbrak crafting stations. Also no Seamstress Aina there. I also tried to give it to the heart event in Dolyak Pass, but no success either. So it seems you can’t do anything with it, then why it is said you can?

There were also some other things I found out:
• It is sold to the merchant when you use sell junk, which would be correct, since it’s a gray item.
• It also seems to only drop on the left side of the road in Dolyak pass, and not the heart event part on the right side. (See screenshots for exact locations.)

http://imageshack.us/photo/my-images/405/dropso.jpg

http://imageshack.us/photo/my-images/43/gw110e.jpg

http://imageshack.us/photo/my-images/38/gw109c.jpg

So it just seems to be junk, which may have been used to make thread in early beta’s but this feature was removed later without removing the collect item? Only logical thing to do here seems to delete the item or delete the description.