GSID: gnometricsystem
PC Name: Cosgrove Bilgburgerbofflebaum
I'm not sure this is intentional, but I doubt it or I wouldn't make this thread. I've noticed that when I create a mirror-image of my PC after going into combat it retains all the buffs I put on myself. This may result in, for example, my mirror-image doing more damage than intended if it has a darkfire'd weapon. I haven't tried death armor, but I imagine that would be an issue as well. On a recent run of the Sahuagin quest my mirror-image held a priestess at bay without taking any damage due to my AC buffs.
That being said, I appreciate the fact that the mirror image looks just like my PC - if I have a darkfire'd weapon, it's great that he has a darkfire'd weapon so that in PVP they can't be told apart via differentiating which is buffed and which is not.
If it did not retain buffs it would not be worth the spell use
Mirror image retains some buffs and it is intentional.