Accidentally deleted a collection
This discussion was created from comments split from: Zotero deleted/lost many of my items?.
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Since I didn't have auto-sync enabled (I thought I had), I figured that the automatic backup procedure involving renaming the .bak files should apply to my case. However, my problem is that since a year or so, I have been using Zotfile, which saves all stored data in a new folder specifically created for this purpose. This means that when I locate my Zotero data, Zotero directs me to this new folder, and the .bak files (as well as all the other files) refer to this folder. However, the collection I was looking at and accidentally deleted predated my use of Zotfile and that data storage folder, and so I'm wondering if those .bak files would even contain the collection?
The instructions I linked to are what you're looking for. But they'll only help if the backup is from before you deleted the collection, as which you can tell from the timestamps of the .bak files.