zotero-better-bibtex: Juris-M Missing Fields

With apologies for reviving a similar thread (#482), I ask if @retorquere is able to assist again with multi-lingual fields export using BBT (v5.1.139) in Juris-M (5.0.71m4).

I have uploaded this entry as a debugging report MDYA7RAM-euc. Here’s an example of a citation in question,

Chen Zhongyuan 陈重远, Liulichang shihua 琉璃厂史话 [History of Liulichang] (Beijing chubanshe, 2015).

The output in my bib file reads:

@book{chen2015e, langid = {pinyin}, title = {琉璃厂史话}, isbn = {978-7-200-11112-5}, abstract = {}, pagetotal = {198}, titleaddon = {History of Liulichang}, usere = {Liulichang shihua}, publisher = {{北京出版社}}, date = {2015}, keywords = {}, author = {陈, 重远} }

So the transliterations of some fields (author and publisher) have disappeared, but the transliteration of title is successfully exported.

Also, I do not know if I should take up this issue with Pandoc, but when converting the citation key using my bib file and the Chicago (full note) CSL, the output became 陈重远, 琉璃厂史话. History of Liulichang (北京出版社, 2015); the transliterations are all gone! Using the same CSL, Juris-M is able to render the correct citation. Is it an issue with my CSL or Pandoc?

Thank you in advance for your help.