Its regarding the skilldescript.lub, skillinfolist.lub and skilltreeview.lub in skillinfoz from your GRF so pre-renewal most probably doesnt have this.
You need to add the info manually. You can get it from here : https://github.com/llchrisll/ROenglishRE/tree/master/Renewal/data/luafiles514/lua files/skillinfoz
Search for MC_CARTDECORATE
skilldescript.lub
[SKID.MC_CARTDECORATE] = {
"Change Cart 2",
"^CC3399Requirement: Finish Quest^000000",
"Type: ^339900Supportive^000000",
"Description: ^777777You can choose a variety of",
"cute designs carts.^000000"
},
skillinfolist.lub
[SKID.MC_CARTDECORATE] = {
"MC_CARTDECORATE",
SkillName = "Change Cart 2",
MaxLv = 1,
SpAmount = { 40 },
bSeperateLv = false,
AttackRange = { 1 }
},
skilltreeview.lub
[JOBID.JT_MERCHANT] = {
[1] = SKID.MC_INCCARRY,
[3] = SKID.MC_MAMMONITE,
[4] = SKID.MC_IDENTIFY,
[5] = SKID.MC_LOUD,
[8] = SKID.MC_DISCOUNT,
[9] = SKID.MC_PUSHCART,
[12] = SKID.MC_CHANGECART,
[13] = SKID.MC_CARTDECORATE,
[15] = SKID.MC_OVERCHARGE,
[16] = SKID.MC_VENDING,
[19] = SKID.MC_CARTREVOLUTION
},