Motivation
Large numbers of files were manually imported to Commons before FileImporter existed. They were imported without their file and page history.
I want to use FileImporter to import these files to Commons again, with their history. I have to do this manually, which is complicated. See FAQ: What if I want to import a file to Commons that has been imported before (without the history)?.
In consequence, many years worth of valuable edit history are lost.

Wish
A tool where admins can:

• Compare both histories on the local wiki and on Commons side by side, including deleted versions
• Select versions to undelete/transfer/delete, with the ability to undelete and delete files on the same screen/dashboard.
• Also with a AWB-style diff-comparison for descriptions and categories
• Maybe also features to support structured data.

Of course, we first need to figure out how to generate a list of files that were manually transferred before.

Where this wish was mentioned
https://www.mediawiki.org/wiki/Topic:Ut8pab1wfkmem2os