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.
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.