Empress Defeated (in kMST)

There's no such thing as a "mirror of the real server" unless you're implying Nexon's server sources have been leaked (recently).

Everything that is server side, including drop, boss behavior, "anti-hack" measures such as hidden drop conditions or map kickout, death notices, death buffs, and so on, is rewritten in the private servers.

Er I believe it actually is, they have been patching the same content the same day nexon has since the releaste of DS/Mercedez, as in they are also a 1.06(orwhateverourcurrentversionis). I maybe using the wrong wording but it's advertised as a mirror of the actual server.