The checks don't seem like they would be that much. There is no sql table for skill_tree that I know of. I was proposing making a way to nullfys an entry in the skill_tree.
Peopleperson49
Original Code
4049,468,7,453,1,0,0,0,0,0,0,0,0 //SL_STUN#Estern#
4049,469,10,467,7,468,7,0,0,0,0,0,0 //SL_SMA#Esma#
4049,470,7,454,1,0,0,0,0,0,0,0,0 //SL_SWOO#Esu#
Db reads this to remove a code for esma the same way it updates the skill tree for the import.
4049,469,-1