That functionality would be awesome to have it on the wp-admin.
@elliot I think that a very intuitive way of appearing on the admin page would be to add a “duplicate field group” or “clone” option on each group. Just like the Duplicate Post plugin works. You can use some inspiration from that plugin as well.
Adding it as a paid extension wouldn’t be a bad idea, you already give a lot with the free version of ACF it makes our life easier 🙂
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