If you have dan 3 in certain skills, you unlock access to certain secret part time jobs with enchant rewards, according to the dan page.
I know thaaat, but what do you mean what happen to them? Are you saying they were removed? I never got blacksmithing dan, so I have no clue what they were or anything.
I heard on the forums it's actually Delen that does all the life skill dan secret ptj. http://mabinogi.nexon.net/Community/forums#%2Fshowthread.php%3F925843-Secret-Part-Time-Jobs%26highlight%3Dsecret%26nxid%3D10