Zotero Connector does collect the year field
When saving an article on Science Advances using the Zotero Connector, the collected metadata about the article are incomplete. For example, the year field is missing. If I manually add the article using the DOI in Zotero, a more complete metadata is present. Example article: https://www.science.org/doi/10.1126/sciadv.abj8030
(If you click on the cite icon and then look at RIS, you only see today's date in Y2, nothing in Y1. Compare that with articles on Science, which have Y1 (in addition to the redundant PY and DA))
Another journal is Small Methods. E.g. article: https://onlinelibrary.wiley.com/doi/10.1002/smtd.202101546