But it doesn't allow bulk merge currently. The best answer depends on how you got multiples in the first place. If you added the same set of references multiple times, sorting by date added and deleting one set is cleanest. If you got duplicates by, e.g., importing similar searches from multiple databases, the quickest way to get rid of them is the Zoplicate plugin, though note that this does carry some risk of merging false positive duplicates
The best answer depends on how you got multiples in the first place. If you added the same set of references multiple times, sorting by date added and deleting one set is cleanest. If you got duplicates by, e.g., importing similar searches from multiple databases, the quickest way to get rid of them is the Zoplicate plugin, though note that this does carry some risk of merging false positive duplicates