I do basically the same. And I wrote some scripts around to auto-fix certain things. E.g. I can change the bib entry name, put a comment `% alias: old-name` ab

I do basically the same. And I wrote some scripts around to auto-fix certain things. E.g. I can change the bib entry name, put a comment `% alias: old-name` above it, and my auto-fix script will go through my tex files and update them accordingly. This is helpful when I found out later that I had a duplicate entry, or when I just want to rename the bib entry name. It is sometimes a bit ambiguous when there is an Arxiv version from a different year than the proceedings publication. In that case, I use the proceedings publication, with a reference to Arxiv as well, and I set the year to the proceedings publication. I have a consistent format for pure Arxiv publications, using misc, and not article as Google Scholar would output it. If I have this inconsistent anywhere, my script would auto-fix this to make it consistent. Or if some entries are missing, it would automatically complete them.