Add ISSN to Crossref DOI metadata (for Unjournal community)

[daaronr]

The Unjournal (community: https://unjournal.pubpub.org, ID: d28e8e57-7f59-486b-9395-b548158a27d6) has been assigned an ISSN: 3071-2173 (online format, application APPL0006023).

I've added the Electronic ISSN to our "All Unjournal ES Content" Issue collection via the dashboard. Two questions:

1. Will this automatically propagate into Crossref DOI deposits? i.e., will the <journal_metadata> in the Crossref XML now include <issn media_type="electronic">3071-2173</issn>? If not, could you help us configure this?

2. Retroactive update for existing DOIs: We have 50+ existing DOIs under prefix 10.21428/d28e8e57.*. Could you trigger a batch re-deposit to Crossref so the ISSN is added to these existing DOIs? Currently none of them have ISSN or container-title metadata in Crossref (verified via api.crossref.org).

Happy to provide any additional info. Thanks