Well, more likely this is information "sharing" between the various corporate children of Constellation Brands, which also owns Blackstone, Clos du Bois, and several others.
In any case, when one hands over an address to a winery, the expectation is not that it will be used by any other corporate siblings. Bad form!
P.S. Before anyone asks, the address is unquestionably unique to Ravenswood and there is no possibility of confusion about what happened.