When I duplicate a ticket, I want to see this in the activity log. Including a link to the duplicate ticket.

This way I can easily trace back the duplicate in case I forgot to link the tickets.

I use duplication either in situations where a ticket grew too big and I want to split it (we do not use sub-tickets because of the "sub tickets in multiple lists" limitations) or in situations where during a refinement related information was shared that should be solved in a different ticket (because of different timelines and/or priority).

For me, in 90% of the situations I want the tickets to be links. I can understand that this is not the case for all users, therefor I do not request to put a duplicate directly in the Relations box.