I have at least a dozen or more monsters disappear from my list and so does my guildmates.

Due to the event, we are all bashing monster really hard and our monster list is long. I save both the codes and links for the monsters. I went back to them after doing my damage, but that are gone from my list. I can not get to them even with the codes or links I save. They did not flee or fail. They all have plenty of time left on them.

I am not sure what to do because trying to explain this to Gaea CS desk will be a nightmare which will not end well.