There is nothing new in churchmen altering the records when it suits them. How about this: In the same Denzinger's The Sources of Catholic Dogma (400-1950) there are recorded in detail 35 decrees issued by the Holy Office from 1602 to 1949: So, what was the Holy Office of 1616? Well in the wake of the Protestant rebellion, Pope Paul III (1534-1549) set up various congregations to assist the popes in their task of safeguarding the apostolic faith held ‘in agreement with Sacred Scripture and apostolic tradition.’ One of the most important of these was the Supreme Sacred Congregation of the Inquisition, otherwise known as the Congregation of the Holy Office, set up in 1542. The function of this body was specifically to maintain and defend the integrity of the faith, to examine and proscribe errors and false doctrines by way of the censorship of books etc., but most of all to combat heresy at the highest level.
Now history records that in 1616, the same Holy Office issued decrees that defined a heresy, but these are not recorded among the 35. When did they disappear, in 1835 when they did a U-turn and hid the heresy because it was embarrising for them. There is, as the Bible says, nothing new under the sun that has not gone before.