View Citation Collection / Location in Zotero
Is it possible to see which collection (or folder) a citation is stored? I sometimes find duplicate entries, but don't know which one to delete, because one is a specific collection, whereas another may be located in the main 'My Library' collection.
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If you haven't used the invalid version anywhere, there's no harm in deleting it, but if it's in collections or you've cited it, merging would almost certainly be easier.
Pressing a key to highlight the relevant collections is good. But a separate location list would be a great help.