Seems it would be easiest to compile several seeming bugs here in one thread:
1. Inanimate mummy item which seems to indicate from the description is a corpse useable in animation responds with "This item cannot be animated" when the attempt is made.
2. When animating from an item, you can have multiple "Shambling Corpse" zombies under control at one time, but if you try and use the item to animate from a great lizard/kobold/skeleton corpse then it will unsummon the prior creature each time you do so.
3. The unleash undead feature on player tools doesn't seem to have carried over from EFU:M and can no longer be accessed.
1 and 3 fixed.
Strangely release undead tool has vanished from the player tools options this reset and is no longer in my player tool quickslots either.
#2 is something that has always been a factor in the system. Read up from my guide on the Player Compendium (//%22http://www.efupw.com/forums/showthread.php?t=64372%22). Specifically, item casting does NOT work the same as native casting.
Item casted animate spells now work in providing multiple "Shambling Corpses" the only issue is with using them on actual corpse items. Though I understand this may not be fixable.
This is the way it has always been. I don't know how the script works but it might be intended or undesirable to fix.
I imagine it is desired, though I admit my scripting knowledge is limited, i cannot really think of any reason It would not function the exact same way as native casting unless the base script which indicates what happens to spells differently when cast from potions, scrolls, wands or items was altered to allow for this.