Possible bug with Ankh/Negative joker interaction?

[Asad]

I'm not sure if it's intentional but I just had a run where I used the Ankh to copy a negative joker and the copy reverted back to it's normal form. If it matters, the joker was the one that adds the sell value of all the jokers on the left to mult.

[Asad]

Never mind this is intended. I must have missed the note when I used the card and when you look at the Ankh in your collection it doesn't mention anything about removing the negative so I assumed it was a bug or something