Card cost reduction doesn't work

playing the new single player mode I reduced the cost of “unidentified contract” by three mana. when i draw the card it turns into on of several effects. But as soon as the new effect is assigned the cost is back to its original value (6)

Thats working correctly. Unidentified contracts mana cost was correctly reduced by 3 but when the card becomes identified showing what card it is its a whole new card. This means it loses all buffs. As such should correctly cost the org calue of 6.

This is the same thing that happens with any card that swiches fourm in your hand not keeping mana cost reduces.