Yes, indeed -- or those who refused to be re-educated. And it works both ways.
I remember an instance in which the new events manager simply denied any prior agreement whatsoever and quoted a new, and higher, meeting room fee. In addition, he denied that his predecessor had made the deal we had with the venue. At that point it was discovered that we hadn't actually signed the contract for the year in question.
So we had to find a new place to meet.