I was reading the book of Ecclesiasticus (Sirach) in the Douay-Rheims Bible, but when I tried to compare some passages with newer versions (like the RSV-CE, Confraternity Bible, etc.) the passages were missing. On further investigation I noticed that entire chunks of chapters are missing in the newer versions and in other parts don't even say the same thing in the newer versions that they say in the Douay-Rheims.
Outside of the Psalms the most important differences between the Vulgata and the KJV are in the Ecclesiaticus (which is considered Apocripha in the KJV) but also there are significant discrepancies in Ezekiel, Daniel and also in some prophets.
I did not found reason for the differences, except that some parts of our Bible are not accepted by the protestants and the Jews
Traditionaly the Bible was divided into paragraphs, the chapters are 12th Century invertion, the verses are from the 17th Century. Apparently the tradition for dividing is different for the Vulgata and KJV, the difference going back to the time of Septuaginta vs Masoretic text.
It is understandable why the protestants rejected the unity with the Catholics, but it is a stumbling block for me, why the Catholics decided for the protestant resolution, and why did so w/o careful explanation.
My only answer is, that a brand new religion the Judeochristianism rules the published world, from which either the Judaism and the Christianity is washed out, and for this process the confusion is necessary.