Although, I wouldn't too quickly dismiss the "...a judge told me so..." line. That may well have happened. I am constantly surprised by the ignorance of those who, by training and professional responsibility, should know better.
Most likely the judge said no such thing. People often hear what they want when they ask a question, so a well-informed judge's answer "You can carry in any state that recognizes our license." may have gotten a little condensed when translated into knucklehead.