Missing quote mark delimiters for month/year Bibtex export

Hi all, I have been struggling with importing and using the exported BibTex file and figured that it keeps giving errors with the data and month fields. Then I noticed that there are no quote mark delimiters for the date fields in the exported BibTex file. I read that this is not always necessary, but I am sort of stuck now as replacing them manually will be horror. So I really hope that there is a possibility to include the quote mark delimiters, would help a lot. Thanks in advance.

Example (everything except the dates use quotes):

title = “The Intelligent Investor: The Definitive Book on Value
Investing. A Book of Practical Counsel (Revised Edition)
(Collins Business Essentials)”,
author = “Graham, Benjamin and Zweig, Jason and Buffett, Warren E”,
publisher = “HarperBusiness”,
edition = “Revised, Subsequent edition”,
month = feb,
year = 2006,
keywords = “Private/Chart Analysis”,
language = “en”

title = “The reflective practitioner: How professionals think in action”,
author = “Schon, Donald A”,
publisher = “Basic Books New York”,
year = 1983

According to the biblatex documentation, the unquoted month short-forms are valid (although older).

Are you using some older or unmaintained bibtex variant?

See page 39 of http://ctan.mirror.rafal.ca/macros/latex/contrib/biblatex/doc/biblatex.pdf (2.3.9)

For backwards compatibility, you may
also use the following three-letter abbreviations in the month field: jan, feb, mar,
apr, may, jun, jul, aug, sep, oct, nov, dec. Note that these abbreviations are
BibTeX strings which must be given without any braces or quotes. When using them,
don’t say month={jan} or month=“jan” but month=jan.

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