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.
I think you are wrong. Last wallet is v1.5.0.0-g. And in this wallet was changed to another blockchain, it happened on March.
Don't send your DVRS coins from a wallet to a different one (1.4.1.0 to 1.5.0.0, or 1.5.0.0 to the old-wallet), keep care on it. If you aren't sure, check the number of both blockchains are, or send first a low quantity.