Incorrect sounds in Mu Lung Dojo

Describe the problem. Be as specific as possible!:
Every boss before Papa Pixie has the Nependeath or Sage Cat sounds. (When the third round starts, sounds return to normal.)

How long will this take to fix?

This is because they changed a few monsters to the new bosses (see eos' extractions [specifically the Mob Changes]).
This also happened with the pirate skills and I don't see that changing any time soon soo...

They got Papa Pixie to Poison Golem right (that's how far I got with a party), so why did this happen to every low boss you'd have to fight for days on end for the black belt?

This problem also exists in KMS/JMS where the first few mobs have the sounds of Nependeaths. So its not a GMS exclusive bug.

Well, this is one of the bugs that are slightly annoying and don't matter so much.

why did this happen to every low boss you'd have to fight for days on end for the black belt?

Honestly I'd skip to the save point after Lord Pirate, there's a set of 5 easy ones (relatively - I think it's Nine-Tailed Fox, Tae Roon, the Poison Golem, King Sage Cat, Jr. Balrog).

Then Elliza, Frankenroid, something, Kimera, Snowman, Blue Mushmom, Crimson Balrog... which are not as easy but I still do them.