Citations unlink when co-authors edit
I'm working on several papers in Word on OneDrive. I have live in-text citations but when my coauthors open the documents, all the citations become unlinked. I've read that this happens if you open a document in OneDrive web browser, but I cannot get them to stop doing this. Is there a way to unlink when I send it out and relink after the document has been reviewed? When I try to relink, it tells me there's no citations found.
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Zotero has clear instructions on moving live citations between word processors. But I have not heard of the apparent issue you describe with web Onedrive.
https://www.zotero.org/support/kb/moving_documents_between_word_processors
What is the exact context here ? Do your collaborators have Zotero ? Or are they just collaborating on writing projects ? If they use Zotero, they are more likely to appreciate the need to avoid doing things that will flatten live citations. If they don't use Zotero, selling the idea of adopting Zotero to them could be an option (the advantages of Group libraries for collaboration, ability for them to add citations from the Group library ... where they will also see it breaking if they do the wrong thing).
Another option would be to use unformatted, plain text citations, like {Smith 2000}, that can't be broken. For those, use Zotero's RTF Scan to do final formatting of citations (requires .RTF format at least during final citation formatting in Zotero; so you can work in another format up until then, and after citation formatting you can save to any format you wish).
https://www.zotero.org/support/rtf_scan
For the years before any reference manager had *any* support for collaborative writing - and citations broke almost every time a colleague edited a Word file with Endnote citations - the procedure was just to try to minimize/cleanup the mess. After doing that a few times people often changed to just keeping a master version, sending a copy to colleagues, expecting them to mess up live citations with Track Changes, and if so then manually copy-pasting/typing the returned edits into your master copy. And then repeat for the next draft !
That's a big reason why I instead used unformatted plain-text citations for years, when I was still working in Endnote (Endnote supports those a little better than Zotero does).
I suspect that colleagues who can't follow instructions will remain a pain point for a long time yet. ;)