Did something happen to the Rising Colossus?

[Sono]

I used to use the RC's to fight the Artic Ogre Lords for karma and fame and the Mud Elementals in Shame for imbuing ingredients. I've noticed the Mud Elementals now only take 4% damage from the RCs before they disappear. They use to last about until the Mud Elementals were down to 10% - 20% health. I thought they must have added hit points or resists to the Mud Elementals. So, I went to the Artic Ogre Lords to test (and gather back some karma). With the AOL, the RC used to kill them and have time left over. Now, he dies when the AOLs are at 40% - 50% health.

Did something happen to the Rising Colossus?

Also, the loot of the Mud Elementals seems low. Did they change these as well?

 

[Storm]

if you changed your mysticism or focus or imbuing levels this will effect the colossus other than that there should not have been any changes I am aware of