UNEQUIP GEAR BEFORE TERMINATE!

[D.A.R.K.]

Before terminate a servant, remove all its gear or the gear will vanish with the servant.
I learned the hard way so you can learn the easy way, you're welcome.

[weirdee]

In the future, they'll probably just add a check to prevent you from doing this without removing their stuff first.

While they're at it, they should also just let you access their inventory from their coffin.