I want to update my paper to arXiv, which includes a separate bibliography. Unfortunately, my local biblatex version is newer than the one used by arXiv. As a result, arXiv does not accept my .bbl file, and it does not accept the original .bib, either (that it never did).
Is there any easy way to generate (or convert?) .bbl in the older version, or do I have to downgrade to update my paper?