I searched this and nothing came up, thus the topic.
While doing the Silver Shroud quest, I killed one of the marks with Righteous Authority (laser rifle) and she was turned into an ash pile. There was no option when I went to leave a calling card on the 'body'.
I tried dropping the card on the ash pile 'body' but it would not let me remove quest items.
Now I'm thinking this is going to be a do-over. Luckily, I have a recent save so I won't have to lose much time.
I guess my question is: Is this an over-sight, a bug, or is it really supposed to work if you use laser weapons or plasma weapons resulting in an ash/goo pile?