ShouldN't the price rise?

It's 0.0053... (plus assets?) worth, when the swap comes.
Why is price falling?
People dumping not wanting to wait for who knows how many months. If you patient enough and have some spare cash, there's a nice APR hidden in here.
If you factor in the BTC bonuses for komodo ico, then it makes sense for BTCD price to follow this pattern:
Oct. 15 - 25% bonus = 0.004257 BTC/BTCD
Oct. 16-22 - 20% bonus = 0.004434 BTC/BTCD
Oct. 23-29 - 15% bonus = 0.004627 BTC/BTCD
Oct. 30-Nov 5 - 10% bonus = 0.004837 BTC/BTCD
Nov 6-12 - 5% bonus = 0.005067 BTC/BTCD
Nov 13-20 - 0% bonus = 0.005321 BTC/BTCD
Price could be pushed higher on the date when BTCD snapshot will be taken to decide ownership of revshare assets. I don't know if snapshot date(s) has been announced yet.
If you see BTCD price going below these numbers at some point, the reason for difference is BTCD holders who want to sell for BTC are paying a "liquidity fee" to buyers who will arbitrage into the komodo ico