It's because this is not an official DVRS swap.  These people are trying to trick you into sending your DVRS to them and getting onboard with their coin.  The latest OFFICIAL wallet for DVRS is 1.4.1.0-g32a928e.  You should NOT use any other wallet for DVRS transactions, or you will likely lose your DVRS.  There is only one DVRS chain and that hasn't changed.  These carpet baggers are just throwing a lot of confusion into the mix hoping you will send them your DVRS for less than market value.