When copying bibtex entries from journal websites, they usually include a lot of information, and not all of it is necessary depending on the journal you are submitting the paper too.
Currently I have two bib files, one with the full citation as taken from the journal page, and the other with the shorthand that I manually entered.
Is there an automatic way to get bibtex to refactor bibliographies? The citation list is starting to get rather large, and so I would like to avoid just copying the main bib file and trimming down the fields by hand. I've heard of people holding on to 4 or 5 bib files with different citation styles, but if you have 30-40 references, keeping track of 150+ references becomes untenable.
More specifically I want the bibliography to ignore title entries and automagically replace 4+ authors with the first author + et al.
If it matters, I'm looking to submit to an AIP journal and want to follow their style manual.