how to restore deleted folders from Zotero App
Suddenly my folders appeared double in my zotero App, I deleted one of each and then all of them where gone...can not be found in the deleted items and also undo is not possible? Any ideas how this can happen?
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Upgrade Storage
You should immediately (before starting or closing Zotero) make a backup of the zotero.sqlite* files in your Zotero data directory and then try restoring the collections from one of your last automatic backups.