Yes, once an abuser always an abusers. Narcissists do NOT change. They just keep coming up with new ways to hurt people in order to get their supply.
I just finished tangling with a narcissist who was refusing to pay me money that I was owed. If I would have argued with the narcissist; he would have kept acting as malicous as possible. Instead, I decided to bring in a THIRD PARTY, The Law. Narcissists can only abuse you if you let them remain in the shadows and do foul things like try to control you through money. Once you bring them into the daylight they burn away like all energy vampires.