When i analyze both itemname-e.dat files i found only one difference - in epilogue numbers colums is higher by 4. In notepad++ i change "0 a," to "0 a," paste customs items in fileedit saves itemnme-e.dat but can't run client - CE
Final
id name add_name description popup supercnt0 cnt0 set_ids set_bonus_desc supercnt1 cnt1 set_extra_ids set_extra_desc unk1[0] unk1[1] unk1[2] unk1[3] unk1[4] unk1[5] unk1[6] unk1[7] unk1[8] special_enchant_amount special_enchant_desc unk2
17 Wooden Arrow a,An arrow made of wood. It is an arrow used for a no grade bow.\0 -1 0 0 a, 0 0 a, 0 0 0 0 0 0 0 0 0 0 a, 1
Epilogue
id name add_name description popup supercnt0 cnt0 set_ids[0] set_ids[1] set_ids[2] set_ids[3] set_ids[4] set_bonus_desc supercnt1 cnt1 set_extra_ids set_extra_desc unk1[0] unk1[1] unk1[2] unk1[3] unk1[4] unk1[5] unk1[6] unk1[7] unk1[8] special_enchant_amount special_enchant_desc unk2
17 Wooden Arrow a,An arrow made of wood. It is an arrow used for a no grade bow.\0 -1 0 0 a, 0 0 a, 0 0 0 0 0 0 0 0 0 0 a, 1