I solved the issue by changing the skill id on all of the files above... for some reason it seems that in the pre-renewal or atleast on my client version which is 20180620 the skillid is not being read properly... so i refer to this thing here Skill_ID_Rules · rathena/rathena Wiki · GitHub
just read this an re-adjust all the skill id that you want to reimplement if someone wants to do as well in their pre-renewal server.
now i can import some 4th job skills to my pre-renewal server. did my countless theor tried and finally succeed somehow.
