Is a way to export a Zotero 5.x library in a way that can be opened by Zotero 4.x?
Zotero 5.0 has been a fantastic improvement over 4.0 for people (like me) who work with large (mostly full-text) Zotero personal and group libraries. Thanks to the team for that. Also most plugins that I use regularly have now been updated to the 5.x branch, which is also great. But there is one that is no longer working and that I found uniquely valuable to (automatically) discover the main topics in a large Zotero library - paper machines (PM). PM no longer works on 5.0. The developer, Cora Johnson-Roberson, did write a Zotero plugin to export Zotero libraries to another textmining tool (Voyant), but that plugin also no longer works.
So I am so desperate to regain that now missing textmining functionality that I'd be willing to re-install the old 4.0 with an old version of firefox - just to get that functionality back. My question to this community: what would be the best way for me to go about that? Can I export my 5.0 library in a format (rdf?) that would allow me to re-import it (in another data folder of course) in Zotero 4.0. Could I run both versions (4.0 and 5.0) in different Firefox profiles and from different data folders alongside each other? Are there any other issues that I may be ignoring/underestimating?
Thanks for any guidance that any of you could provide me with on this!