here's my view of how this should work (and how I thought it was working, to be honest):
Unidentified images should be identified via threads in the appropriate forum. So, the images should be uploaded to the Archive (preferably the Unidentified Gallery) and a thread should be started asking for help to identify it. I agree that there is little point sifting through images in the Unidentified Gallery trying to ID them, instead users should sift through threads in the appropriate forum and offer IDs where they are still needed.
Once an image has been identified it is not currently possible for us to transfer it to the main gallery. Instead, members should simply upload it again, to the main gallery, and include the full common name and scientific name.
The downside of this is that there will be duplicate images remaining in the Unidentified Gallery. But Stu previously indicated that these shouldn't cause too many problems given the size of the server. They are also still required in order for the original thread to keep its images.
Matt