MadeInKorea

Source: http://heroes.nexon.com/News/devnote/View?page=1&postno=304

Google translate works fairly well for this, but to sum up the post here are the main points:

The … (more)current restoration system isn't what DevCat originally intended, which is reviving the weapon for continued use. Instead, players have been using the system in order to achieve higher enhancement levels, aka double booming and hoping that you get a higher enhance. This process also takes a toll on the player's AP, as it takes a large amount to restore the weapon. As such, the following changes will be made to the system:

1. AP restored items will not be able to be enhanced again.
2. AP restored items will have their enhancement level reduced by 1. [Reverted as of 4/26/17]
3. The AP required to restore an item will be reduced to be about 10% of what it currently is.
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