Why replacement cards?

By Facepalm2, in Descent: Journeys in the Dark

In Well of darknes, beastmen and skeletons cards are there for replacement. Why?

Thanks

Because they haven't different stats. If you have a newer version of the base Descent game, then you've already got the newer stats for them and can ignore the replacement cards.

I didnt notice i difference, guess i have the newer one then.

Thanks