congratulations, you have made a real find, one of the best translations we have, and valid for liturgical use and personal study. you have the “old” Jerusalem bible. the “new” JB on the other hand was revised for inclusive language and some of the footnotes reworded or revised badly. This is my favorite version of the New Testament, especially John’s gospel.
The notes to various translations, NAB, RSV-CE etc. are not the be all and end all of bible interpretation, they are guides, and not meant to be exhaustive commentary. That is why having the various versions on hand is so useful for study, but you still need a good general commentary.
There are numerous threads here discussing the pros and cons of various translations. If they are approved by the Church you need have no scruples about using them.