Sorry, repository was accidentally set to private. Just made it public so link should work: https://github.com/jnash67/KeePassGroupColumn
Took a first stab at a plugin. It provides a column in the main entry list that shows the Group an Entry is in. I find this helpful when looking at a large list, sorted across groups ('Grouping in Entry List' off). Details and the code and DLL are here: https://github.com/jnash67/KeePassGroupColumn
Would be great if this idea could be resurrected. I have tons of near duplicates that Delete Duplicate Entries does not find. Would love to be able to see two entries side by side and either delete one or copy everything from one to the other, especially for differences in Notes.