Effect anomalies

[Lari]

Mage lvl 13 on impossible, with demons, demonesses, imps, better imps, and necros.
Fighting in taron mines, a bunch of dwarves (no hero).
Reduced the stack of miners to a decent number, by curse and DDAoE in the first two rounds. My demoness act first, and charmed them in the third turn, but then, when it came their turn to move, they got free of the charm (they were blue and suddently became red again) and hit some of mine, with my disappointment. On the beginning of the forth turn, casted a "raise dead" with necros on a stack of dead priests. They resurrected AS PRIESTs (ie. not skeletons or similar) and as enemies O_O .kinda shocked. Any idea why?