Keep

Keep - Premium

If a rule with the * symbol is used, the original item will disappear and a new item will replace the original item. Therefore, the data of the original item will disappear. If you want to retain some information about the original item, you need to use the rules here.

Support keep-enchants, keep-name, keep-lore, keep-item-name, keep-flag, keep-damage change rule.

fake-changes:
  keep-enchants: true
  keep-name: true
  keep-lore: true
  keep-item-name: true
  keep-flag: true
  keep-damage: true

Keep is a standard change rule, not a option inside ItemFormat, for example:

fake-changes:
  keep-enchants: true
  replace-item:
    # keep-enchants: true <--- This is wrong! Put keep rules here will not work!
    hook-plugin: MMOItems
    hook-item: 'MATERIAL;;REAR_INGOT'