What im trying to say . Since the renewal is the updated item from KRO you already have all the item that are not on pre-re item_db right ? .
So if the renewal load first and the pre-re will be the 2nd the item on renewal will be overwrite with the config from the pre-re . What if give a try to your test server and looks how it works so hard to my part because im not really good in english 1st Example: Blue potion
Blue potion from renewal is ( itemheal 0,rand(50,70);) . But since the 2nd database will overwrite the db and the 2nd database is pre-re config . Now the blue potion will be come (itemheal 0,rand(40,60); ) 2nd Example: What if the item is not on pre-renewal item_db like celestial dark frame...
If celestial dark frame is not on pre-renewal... But since you load the renewal first you can get it. You can give it a try by using @item "ItemId" . Now since this item is not on pre-re item db. The stats,defense,cost,script will be on renewal item_db.yml . You need to config it on re item_db.yml .